# Incompatible Changes in IntelliJ Platform and Plugins API 2025.* List of known Breaking API Changes in 2025.* ## 2025.1 ### IntelliJ Platform 2025.1 ### Kotlin Plugin 2025.1 `org.jetbrains.kotlin.KtFakeSourceElement` class renamed to `org.jetbrains.kotlin.KtFakePsiSourceElement` : Update code usages.