diff --git a/action_basics/build.gradle.kts b/action_basics/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/action_basics/build.gradle.kts
+++ b/action_basics/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/comparing_string_references_inspection/build.gradle.kts b/comparing_string_references_inspection/build.gradle.kts
index 519b3d06b..6fec0f363 100644
--- a/comparing_string_references_inspection/build.gradle.kts
+++ b/comparing_string_references_inspection/build.gradle.kts
@@ -22,7 +22,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -33,7 +33,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/conditional_operator_intention/build.gradle.kts b/conditional_operator_intention/build.gradle.kts
index 519b3d06b..6fec0f363 100644
--- a/conditional_operator_intention/build.gradle.kts
+++ b/conditional_operator_intention/build.gradle.kts
@@ -22,7 +22,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -33,7 +33,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/editor_basics/build.gradle.kts b/editor_basics/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/editor_basics/build.gradle.kts
+++ b/editor_basics/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/facet_basics/build.gradle.kts b/facet_basics/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/facet_basics/build.gradle.kts
+++ b/facet_basics/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetType.java b/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetType.java
index 73178fdcc..82686bb7d 100644
--- a/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetType.java
+++ b/facet_basics/src/main/java/org/intellij/sdk/facet/DemoFacetType.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.facet;
 
@@ -9,7 +9,6 @@ import com.intellij.openapi.module.Module;
 import com.intellij.openapi.module.ModuleType;
 import icons.SdkIcons;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 
@@ -46,7 +45,6 @@ final class DemoFacetType extends FacetType<DemoFacet, DemoFacetConfiguration> {
     return true;
   }
 
-  @Nullable
   @Override
   public Icon getIcon() {
     return SdkIcons.Sdk_default_icon;
diff --git a/framework_basics/build.gradle.kts b/framework_basics/build.gradle.kts
index 172b40562..2adad0c1f 100644
--- a/framework_basics/build.gradle.kts
+++ b/framework_basics/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -29,7 +29,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/kotlin_demo/build.gradle.kts b/kotlin_demo/build.gradle.kts
index 3918d91b7..5afd3d0a2 100644
--- a/kotlin_demo/build.gradle.kts
+++ b/kotlin_demo/build.gradle.kts
@@ -19,7 +19,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -29,8 +29,8 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 
   compileKotlin {
diff --git a/live_templates/build.gradle.kts b/live_templates/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/live_templates/build.gradle.kts
+++ b/live_templates/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/live_templates/src/main/java/org/intellij/sdk/liveTemplates/TitleCaseMacro.java b/live_templates/src/main/java/org/intellij/sdk/liveTemplates/TitleCaseMacro.java
index 266dd361a..b4ff3ac4e 100644
--- a/live_templates/src/main/java/org/intellij/sdk/liveTemplates/TitleCaseMacro.java
+++ b/live_templates/src/main/java/org/intellij/sdk/liveTemplates/TitleCaseMacro.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.liveTemplates;
 
@@ -27,7 +27,7 @@ final class TitleCaseMacro extends MacroBase {
     if (text == null) {
       return null;
     }
-    if (text.length() > 0) {
+    if (!text.isEmpty()) {
       // Capitalize the start of every word
       text = StringUtil.toTitleCase(text);
     }
diff --git a/max_opened_projects/build.gradle.kts b/max_opened_projects/build.gradle.kts
index fb92ab629..be710eb94 100644
--- a/max_opened_projects/build.gradle.kts
+++ b/max_opened_projects/build.gradle.kts
@@ -3,6 +3,7 @@
 plugins {
   id("java")
   id("org.jetbrains.intellij") version "1.17.3"
+  id("org.jetbrains.kotlin.jvm") version "1.9.23"
 }
 
 group = "org.intellij.sdk"
@@ -18,7 +19,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +29,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java b/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
index 925ed621b..f5907233b 100644
--- a/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
+++ b/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectCloseListener.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.maxOpenProjects;
 
@@ -14,11 +14,6 @@ public class ProjectCloseListener implements ProjectManagerListener {
 
   @Override
   public void projectClosed(@NotNull Project project) {
-    // Ensure this isn't part of testing
-    if (ApplicationManager.getApplication().isUnitTestMode()) {
-      return;
-    }
-
     // Get the counting service
     ProjectCountingService projectCountingService =
         ApplicationManager.getApplication().getService(ProjectCountingService.class);
diff --git a/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java b/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java
deleted file mode 100644
index d305d3717..000000000
--- a/max_opened_projects/src/main/java/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.java
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
-
-package org.intellij.sdk.maxOpenProjects;
-
-import com.intellij.openapi.application.ApplicationManager;
-import com.intellij.openapi.project.Project;
-import com.intellij.openapi.startup.StartupActivity;
-import com.intellij.openapi.ui.Messages;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * Invoked on opening a project.
- */
-final class ProjectOpenStartupActivity implements StartupActivity.DumbAware {
-
-  @Override
-  public void runActivity(@NotNull Project project) {
-    // Ensure this isn't part of testing
-    if (ApplicationManager.getApplication().isUnitTestMode()) {
-      return;
-    }
-
-    // Get the counting service
-    ProjectCountingService projectCountingService =
-        ApplicationManager.getApplication().getService(ProjectCountingService.class);
-    // Increment the project count
-    projectCountingService.increaseOpenProjectCount();
-
-    // See if the total # of projects violates the limit.
-    if (projectCountingService.isOpenProjectsLimitExceeded()) {
-      // Transitioned to outside the limit
-      String title = String.format("Opening Project \"%s\"", project.getName());
-      String message = "<br>The number of open projects exceeds the SDK plugin max_opened_projects limit.<br><br>";
-
-      ApplicationManager.getApplication().invokeLater(() ->
-          Messages.showMessageDialog(project, message, title, Messages.getInformationIcon())
-      );
-    }
-  }
-
-}
diff --git a/max_opened_projects/src/main/kotlin/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.kt b/max_opened_projects/src/main/kotlin/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.kt
new file mode 100644
index 000000000..8254da6f3
--- /dev/null
+++ b/max_opened_projects/src/main/kotlin/org/intellij/sdk/maxOpenProjects/ProjectOpenStartupActivity.kt
@@ -0,0 +1,29 @@
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package org.intellij.sdk.maxOpenProjects
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.project.DumbAware
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.startup.ProjectActivity
+import com.intellij.openapi.ui.Messages
+
+/**
+ * Invoked on opening a project.
+ */
+internal class ProjectOpenStartupActivity : ProjectActivity, DumbAware {
+  override suspend fun execute(project: Project) {
+    val application = ApplicationManager.getApplication()
+    val projectCountingService = application.getService(ProjectCountingService::class.java)
+    projectCountingService.increaseOpenProjectCount()
+    if (projectCountingService.isOpenProjectsLimitExceeded) {
+      application.invokeLater {
+        Messages.showMessageDialog(
+                project,
+                "The number of open projects exceeded the limit while opening the '${project.name}' project.",
+                "Open Projects Limit Exceeded",
+                Messages.getInformationIcon()
+        )
+      }
+    }
+  }
+}
diff --git a/module/build.gradle.kts b/module/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/module/build.gradle.kts
+++ b/module/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/module/src/main/java/org/intellij/sdk/module/DemoModuleBuilder.java b/module/src/main/java/org/intellij/sdk/module/DemoModuleBuilder.java
index 80d381dfb..cba5b107f 100644
--- a/module/src/main/java/org/intellij/sdk/module/DemoModuleBuilder.java
+++ b/module/src/main/java/org/intellij/sdk/module/DemoModuleBuilder.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.module;
 
@@ -6,6 +6,7 @@ import com.intellij.ide.util.projectWizard.ModuleBuilder;
 import com.intellij.ide.util.projectWizard.ModuleWizardStep;
 import com.intellij.ide.util.projectWizard.WizardContext;
 import com.intellij.openapi.Disposable;
+import com.intellij.openapi.module.ModuleType;
 import com.intellij.openapi.roots.ModifiableRootModel;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -17,7 +18,7 @@ public class DemoModuleBuilder extends ModuleBuilder {
   }
 
   @Override
-  public DemoModuleType getModuleType() {
+  public ModuleType<DemoModuleBuilder> getModuleType() {
     return DemoModuleType.getInstance();
   }
 
diff --git a/product_specific/pycharm_basics/build.gradle.kts b/product_specific/pycharm_basics/build.gradle.kts
index f210a6787..e6f754d40 100644
--- a/product_specific/pycharm_basics/build.gradle.kts
+++ b/product_specific/pycharm_basics/build.gradle.kts
@@ -31,7 +31,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/project_model/build.gradle.kts b/project_model/build.gradle.kts
index 172b40562..2adad0c1f 100644
--- a/project_model/build.gradle.kts
+++ b/project_model/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -29,7 +29,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java b/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
index d224f473a..026f4c53d 100644
--- a/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
+++ b/project_model/src/main/java/org/intellij/sdk/project/model/LibrariesAction.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.project.model;
 
@@ -62,8 +62,7 @@ public class LibrariesAction extends AnAction {
       final ProjectFileIndex fileIndex = ProjectRootManager.getInstance(project).getFileIndex();
       StringBuilder jars = new StringBuilder();
       for (OrderEntry orderEntry : fileIndex.getOrderEntriesForFile(virtualFile)) {
-        if (orderEntry instanceof LibraryOrderEntry) {
-          final LibraryOrderEntry libraryEntry = (LibraryOrderEntry) orderEntry;
+        if (orderEntry instanceof LibraryOrderEntry libraryEntry) {
           final Library library = libraryEntry.getLibrary();
           if (library == null) {
             continue;
@@ -79,7 +78,7 @@ public class LibrariesAction extends AnAction {
       }
       String fileAndLibs;
       if (jars.length() > 0) {
-        fileAndLibs = virtualFile.getName() + ": " + jars.toString();
+        fileAndLibs = virtualFile.getName() + ": " + jars;
       } else {
         fileAndLibs = "None";
       }
diff --git a/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java b/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
index 6e717396f..ebd1d6d02 100644
--- a/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
+++ b/project_model/src/main/java/org/intellij/sdk/project/model/ShowSourceRootsActions.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.project.model;
 
@@ -32,7 +32,7 @@ public class ShowSourceRootsActions extends AnAction {
       sourceRootsList.append(file.getUrl()).append("\n");
     }
     Messages.showInfoMessage(
-        "Source roots for the " + projectName + " plugin:\n" + sourceRootsList.toString(),
+        "Source roots for the " + projectName + " plugin:\n" + sourceRootsList,
         "Project Properties"
     );
   }
diff --git a/project_view_pane/build.gradle.kts b/project_view_pane/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/project_view_pane/build.gradle.kts
+++ b/project_view_pane/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/project_wizard/build.gradle.kts b/project_wizard/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/project_wizard/build.gradle.kts
+++ b/project_wizard/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/psi_demo/build.gradle.kts b/psi_demo/build.gradle.kts
index 172b40562..2adad0c1f 100644
--- a/psi_demo/build.gradle.kts
+++ b/psi_demo/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -29,7 +29,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/run_configuration/build.gradle.kts b/run_configuration/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/run_configuration/build.gradle.kts
+++ b/run_configuration/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/settings/build.gradle.kts b/settings/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/settings/build.gradle.kts
+++ b/settings/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java b/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
index 890b5e15c..665cc58de 100644
--- a/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
+++ b/settings/src/main/java/org/intellij/sdk/settings/AppSettingsState.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.settings;
 
@@ -8,7 +8,6 @@ import com.intellij.openapi.components.State;
 import com.intellij.openapi.components.Storage;
 import com.intellij.util.xmlb.XmlSerializerUtil;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 /**
  * Supports storing the application settings in a persistent way.
@@ -28,7 +27,6 @@ final class AppSettingsState implements PersistentStateComponent<AppSettingsStat
     return ApplicationManager.getApplication().getService(AppSettingsState.class);
   }
 
-  @Nullable
   @Override
   public AppSettingsState getState() {
     return this;
diff --git a/simple_language_plugin/build.gradle.kts b/simple_language_plugin/build.gradle.kts
index ef8cda24e..fab272cfd 100644
--- a/simple_language_plugin/build.gradle.kts
+++ b/simple_language_plugin/build.gradle.kts
@@ -31,7 +31,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
   plugins.set(listOf("com.intellij.java"))
 }
 
@@ -42,7 +42,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java
index 3d275347e..065263be4 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCodeStyleSettingsProvider.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -10,7 +10,6 @@ import com.intellij.psi.codeStyle.CodeStyleSettings;
 import com.intellij.psi.codeStyle.CodeStyleSettingsProvider;
 import com.intellij.psi.codeStyle.CustomCodeStyleSettings;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 final class SimpleCodeStyleSettingsProvider extends CodeStyleSettingsProvider {
 
@@ -19,7 +18,6 @@ final class SimpleCodeStyleSettingsProvider extends CodeStyleSettingsProvider {
     return new SimpleCodeStyleSettings(settings);
   }
 
-  @Nullable
   @Override
   public String getConfigurableDisplayName() {
     return "Simple";
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
index 873037048..43ba5398d 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleColorSettingsPage.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -22,7 +22,6 @@ final class SimpleColorSettingsPage implements ColorSettingsPage {
       new AttributesDescriptor("Bad value", SimpleSyntaxHighlighter.BAD_CHARACTER)
   };
 
-  @Nullable
   @Override
   public Icon getIcon() {
     return SimpleIcons.FILE;
@@ -37,18 +36,19 @@ final class SimpleColorSettingsPage implements ColorSettingsPage {
   @NotNull
   @Override
   public String getDemoText() {
-    return "# You are reading the \".properties\" entry.\n" +
-        "! The exclamation mark can also mark text as comments.\n" +
-        "website = https://en.wikipedia.org/\n" +
-        "language = English\n" +
-        "# The backslash below tells the application to continue reading\n" +
-        "# the value onto the next line.\n" +
-        "message = Welcome to \\\n" +
-        "          Wikipedia!\n" +
-        "# Add spaces to the key\n" +
-        "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
-        "# Unicode\n" +
-        "tab : \\u0009";
+    return """
+        # You are reading the ".properties" entry.
+        ! The exclamation mark can also mark text as comments.
+        website = https://en.wikipedia.org/
+        language = English
+        # The backslash below tells the application to continue reading
+        # the value onto the next line.
+        message = Welcome to \\
+                  Wikipedia!
+        # Add spaces to the key
+        key\\ with\\ spaces = This is the value that could be looked up with the key "key with spaces".
+        # Unicode
+        tab : \\u0009""";
   }
 
   @Nullable
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCommenter.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCommenter.java
index 43286603f..cfa2c39c5 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCommenter.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleCommenter.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -7,13 +7,11 @@ import org.jetbrains.annotations.Nullable;
 
 final class SimpleCommenter implements Commenter {
 
-  @Nullable
   @Override
   public String getLineCommentPrefix() {
     return "#";
   }
 
-  @Nullable
   @Override
   public String getBlockCommentPrefix() {
     return "";
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileType.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileType.java
index 8b1e8cbb1..9c14e2875 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileType.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileType.java
@@ -1,10 +1,9 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
 import com.intellij.openapi.fileTypes.LanguageFileType;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 
@@ -34,7 +33,6 @@ public final class SimpleFileType extends LanguageFileType {
     return "simple";
   }
 
-  @Nullable
   @Override
   public Icon getIcon() {
     return SimpleIcons.FILE;
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
index 685636dbc..5b9442f7e 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFindUsagesProvider.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -15,7 +15,6 @@ import org.jetbrains.annotations.Nullable;
 
 final class SimpleFindUsagesProvider implements FindUsagesProvider {
 
-  @Nullable
   @Override
   public WordsScanner getWordsScanner() {
     return new DefaultWordsScanner(new SimpleLexerAdapter(),
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
index da61a134e..f6b28eb48 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFoldingBuilder.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -27,7 +27,9 @@ import java.util.List;
 final class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware {
 
   @Override
-  public FoldingDescriptor @NotNull [] buildFoldRegions(@NotNull PsiElement root, @NotNull Document document, boolean quick) {
+  public FoldingDescriptor @NotNull [] buildFoldRegions(@NotNull PsiElement root,
+                                                        @NotNull Document document,
+                                                        boolean quick) {
     // Initialize the group of folding regions that will expand/collapse together.
     FoldingGroup group = FoldingGroup.newGroup(SimpleAnnotator.SIMPLE_PREFIX_STR);
     // Initialize the list of folding regions
@@ -40,7 +42,8 @@ final class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware {
         super.visitLiteralExpression(literalExpression);
 
         String value = PsiLiteralUtil.getStringLiteralContent(literalExpression);
-        if (value != null && value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
+        if (value != null &&
+            value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
           Project project = literalExpression.getProject();
           String key = value.substring(
               SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
@@ -58,7 +61,7 @@ final class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware {
       }
     });
 
-    return descriptors.toArray(FoldingDescriptor.EMPTY);
+    return descriptors.toArray(FoldingDescriptor.EMPTY_ARRAY);
   }
 
   /**
@@ -95,7 +98,9 @@ final class SimpleFoldingBuilder extends FoldingBuilderEx implements DumbAware {
         return StringUtil.THREE_DOTS;
       }
 
-      return propertyValue.replaceAll("\n", "\\n").replaceAll("\"", "\\\\\"");
+      return propertyValue
+          .replaceAll("\n", "\\n")
+          .replaceAll("\"", "\\\\\"");
     }
 
     return null;
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
index 077019628..a52a8d522 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLanguageCodeStyleSettingsProvider.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -27,19 +27,20 @@ final class SimpleLanguageCodeStyleSettingsProvider extends LanguageCodeStyleSet
 
   @Override
   public String getCodeSample(@NotNull SettingsType settingsType) {
-    return "# You are reading the \".properties\" entry.\n" +
-        "! The exclamation mark can also mark text as comments.\n" +
-        "website = https://en.wikipedia.org/\n" +
-        "\n" +
-        "language = English\n" +
-        "# The backslash below tells the application to continue reading\n" +
-        "# the value onto the next line.\n" +
-        "message = Welcome to \\\n" +
-        "          Wikipedia!\n" +
-        "# Add spaces to the key\n" +
-        "key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
-        "# Unicode\n" +
-        "tab : \\u0009";
+    return """
+        # You are reading the ".properties" entry.
+        ! The exclamation mark can also mark text as comments.
+        website = https://en.wikipedia.org/
+
+        language = English
+        # The backslash below tells the application to continue reading
+        # the value onto the next line.
+        message = Welcome to \\
+                  Wikipedia!
+        # Add spaces to the key
+        key\\ with\\ spaces = This is the value that could be looked up with the key "key with spaces".
+        # Unicode
+        tab : \\u0009""";
   }
 
 }
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
index e89f709ef..43075b1b2 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleLineMarkerProvider.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -21,12 +21,11 @@ final class SimpleLineMarkerProvider extends RelatedItemLineMarkerProvider {
   protected void collectNavigationMarkers(@NotNull PsiElement element,
                                           @NotNull Collection<? super RelatedItemLineMarkerInfo<?>> result) {
     // This must be an element with a literal expression as a parent
-    if (!(element instanceof PsiJavaTokenImpl) || !(element.getParent() instanceof PsiLiteralExpression)) {
+    if (!(element instanceof PsiJavaTokenImpl) || !(element.getParent() instanceof PsiLiteralExpression literalExpression)) {
       return;
     }
 
     // The literal expression must start with the Simple language literal expression
-    PsiLiteralExpression literalExpression = (PsiLiteralExpression) element.getParent();
     String value = literalExpression.getValue() instanceof String ? (String) literalExpression.getValue() : null;
     if ((value == null) ||
         !value.startsWith(SimpleAnnotator.SIMPLE_PREFIX_STR + SimpleAnnotator.SIMPLE_SEPARATOR_STR)) {
@@ -39,7 +38,7 @@ final class SimpleLineMarkerProvider extends RelatedItemLineMarkerProvider {
         SimpleAnnotator.SIMPLE_PREFIX_STR.length() + SimpleAnnotator.SIMPLE_SEPARATOR_STR.length()
     );
     final List<SimpleProperty> properties = SimpleUtil.findProperties(project, possibleProperties);
-    if (properties.size() > 0) {
+    if (!properties.isEmpty()) {
       // Add the property to a collection of line marker info
       NavigationGutterIconBuilder<PsiElement> builder =
           NavigationGutterIconBuilder.create(SimpleIcons.FILE)
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
index f6170e037..ec49b96e6 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -47,7 +47,7 @@ final class SimpleReference extends PsiReferenceBase<PsiElement> implements PsiP
     List<SimpleProperty> properties = SimpleUtil.findProperties(project);
     List<LookupElement> variants = new ArrayList<>();
     for (final SimpleProperty property : properties) {
-      if (property.getKey() != null && property.getKey().length() > 0) {
+      if (property.getKey() != null && !property.getKey().isEmpty()) {
         variants.add(LookupElementBuilder
             .create(property).withIcon(SimpleIcons.FILE)
             .withTypeText(property.getContainingFile().getName())
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
index c14609cf9..6c96d71a9 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleSpellcheckingStrategy.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -34,7 +34,7 @@ final class SimpleSpellcheckingStrategy extends SpellcheckingStrategy {
   private static class SimpleCommentTokenizer extends Tokenizer<PsiComment> {
 
     @Override
-    public void tokenize(@NotNull PsiComment element, TokenConsumer consumer) {
+    public void tokenize(@NotNull PsiComment element, @NotNull TokenConsumer consumer) {
       // Exclude the start of the comment with its # characters from spell checking
       int startIndex = 0;
       for (char c : element.textToCharArray()) {
@@ -53,7 +53,7 @@ final class SimpleSpellcheckingStrategy extends SpellcheckingStrategy {
 
   private static class SimplePropertyTokenizer extends Tokenizer<SimpleProperty> {
 
-    public void tokenize(@NotNull SimpleProperty element, TokenConsumer consumer) {
+    public void tokenize(@NotNull SimpleProperty element, @NotNull TokenConsumer consumer) {
       //Spell check the keys and values of properties with different splitters
       final ASTNode key = element.getNode().findChildByType(SimpleTypes.KEY);
       if (key != null && key.getTextLength() > 0) {
diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewFactory.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewFactory.java
index 6d916bfb4..437e71548 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewFactory.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleStructureViewFactory.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -13,7 +13,6 @@ import org.jetbrains.annotations.Nullable;
 
 final class SimpleStructureViewFactory implements PsiStructureViewFactory {
 
-  @Nullable
   @Override
   public StructureViewBuilder getStructureViewBuilder(@NotNull final PsiFile psiFile) {
     return new TreeBasedStructureViewBuilder() {
diff --git a/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java b/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
index 904451512..91e5844b4 100644
--- a/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
+++ b/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleCodeInsightTest.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -13,7 +13,6 @@ import com.intellij.psi.PsiReference;
 import com.intellij.psi.codeStyle.CodeStyleManager;
 import com.intellij.testFramework.fixtures.LightJavaCodeInsightFixtureTestCase;
 import com.intellij.usageView.UsageInfo;
-import com.intellij.util.containers.ContainerUtil;
 import org.intellij.sdk.language.psi.SimpleProperty;
 
 import java.util.Collection;
@@ -49,7 +48,7 @@ public class SimpleCodeInsightTest extends LightJavaCodeInsightFixtureTestCase {
     WriteCommandAction.writeCommandAction(getProject()).run(() ->
         CodeStyleManager.getInstance(getProject()).reformatText(
             myFixture.getFile(),
-            ContainerUtil.newArrayList(myFixture.getFile().getTextRange())
+            List.of(myFixture.getFile().getTextRange())
         )
     );
     myFixture.checkResultByFile("DefaultTestData.simple");
diff --git a/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java b/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
index 91f56446f..cc4b9f248 100644
--- a/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
+++ b/simple_language_plugin/src/test/java/org/intellij/sdk/language/SimpleParsingTest.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 
 package org.intellij.sdk.language;
 
@@ -22,11 +22,6 @@ public class SimpleParsingTest extends ParsingTestCase {
     return "src/test/testData";
   }
 
-  @Override
-  protected boolean skipSpaces() {
-    return false;
-  }
-
   @Override
   protected boolean includeRanges() {
     return true;
diff --git a/tool_window/build.gradle.kts b/tool_window/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/tool_window/build.gradle.kts
+++ b/tool_window/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }
diff --git a/tree_structure_provider/build.gradle.kts b/tree_structure_provider/build.gradle.kts
index fb92ab629..65d73304c 100644
--- a/tree_structure_provider/build.gradle.kts
+++ b/tree_structure_provider/build.gradle.kts
@@ -18,7 +18,7 @@ java {
 
 // See https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {
-  version.set("2023.1.5")
+  version.set("2023.2.6")
 }
 
 tasks {
@@ -28,7 +28,7 @@ tasks {
 
   patchPluginXml {
     version.set("${project.version}")
-    sinceBuild.set("231")
-    untilBuild.set("233.*")
+    sinceBuild.set("232")
+    untilBuild.set("241.*")
   }
 }