diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 55dcf204f5f..56e8d19e215 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -9,6 +9,6 @@
     <option name="additionalArguments" value="-version -Xallow-kotlin-package -Xskip-metadata-version-check" />
   </component>
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.8.20-dev-5197" />
+    <option name="version" value="1.9.0-dev-877" />
   </component>
 </project>
diff --git a/gradle.properties b/gradle.properties
index 192c96d75fa..537543a3cd8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -34,7 +34,7 @@ kotlin.build.gradlePlugin.version=0.0.39
 #maven.repository.mirror=http://repository.jetbrains.com/remote-repos/
 #bootstrap.kotlin.repo=https://maven.pkg.jetbrains.space/kotlin/p/kotlin/bootstrap
 #bootstrap.kotlin.version=1.1.50-dev-1451
-bootstrap.kotlin.default.version=1.8.20-dev-5197
+bootstrap.kotlin.default.version=1.9.0-dev-877
 
 kotlin.build.publishing.attempts=20
 #signingRequired=true