diff --git a/java/java-runtime/BUILD.bazel b/java/java-runtime/BUILD.bazel
index c99f72062992..b8e123af4ae6 100644
--- a/java/java-runtime/BUILD.bazel
+++ b/java/java-runtime/BUILD.bazel
@@ -17,7 +17,7 @@ jvm_library(
   module_name = "intellij.java.rt",
   visibility = ["//visibility:public"],
   srcs = glob(["src/**/*.kt", "src/**/*.java"], allow_empty = True),
-  kotlinc_opts = "@community//:k7",
+  kotlinc_opts = "@community//:k8",
   deps = [
     "@lib//:java-rt-ant-1-7-1-provided",
     ":libraries_junit4_provided",
diff --git a/java/java-runtime/intellij.java.rt.iml b/java/java-runtime/intellij.java.rt.iml
index 5ea303d9f65a..7bf9db8df457 100644
--- a/java/java-runtime/intellij.java.rt.iml
+++ b/java/java-runtime/intellij.java.rt.iml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module relativePaths="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="true">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8" inherit-compiler-output="true">
     <exclude-output />
     <annotation-paths>
       <root url="file://$MODULE_DIR$/anno" />
diff --git a/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt b/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
index e9ada805970a..12569e2297df 100644
--- a/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
+++ b/platform/build-scripts/src/org/jetbrains/intellij/build/BaseIdeaProperties.kt
@@ -67,7 +67,7 @@ val IDEA_BUNDLED_PLUGINS: PersistentList<String> = DEFAULT_BUNDLED_PLUGINS + seq
 
 val CE_CLASS_VERSIONS: Map<String, String> = mapOf(
   "" to "17",
-  "lib/idea_rt.jar" to "1.7",
+  "lib/idea_rt.jar" to "1.8",
   "lib/forms_rt.jar" to "1.8",
   "lib/annotations.jar" to "1.8",
   "lib/util_rt.jar" to "1.7",