diff --git a/gradle.properties b/gradle.properties
index 24e2e12ee6f..7751f9899f1 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,15 +15,15 @@
 #
 
 # A version of the Kotlin "toolchain" (compiler, runtime, stdlib etc) used by the build script.
-buildKotlinVersion=1.3.40-dev-431
-buildKotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.40-dev-431,pinned:true/artifacts/content/maven
+buildKotlinVersion=1.3.40-dev-2251
+buildKotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.40-dev-2251,pinned:true/artifacts/content/maven
 remoteRoot=konan_tests
-kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.40-dev-2068,branch:default:true,pinned:true/artifacts/content/maven
-kotlinVersion=1.3.40-dev-2068
-testKotlinVersion=1.3.40-dev-2068
+kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.40-dev-2423,branch:default:true,pinned:true/artifacts/content/maven
+kotlinVersion=1.3.40-dev-2423
+testKotlinVersion=1.3.40-dev-2423
 # See https://teamcity.jetbrains.com/project.html?projectId=Kotlin_KotlinNativeShared&tab=projectOverview
-sharedRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_KotlinNativeShared_BuildAndTest),number:1.0-dev-46,branch:default:true,pinned:true/artifacts/content/maven
-sharedVersion=1.0-dev-46
+sharedRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_KotlinNativeShared_BuildAndTest),number:1.0-dev-49,branch:default:true,pinned:true/artifacts/content/maven
+sharedVersion=1.0-dev-49
 konanVersion=1.3.0
 org.gradle.jvmargs='-Dfile.encoding=UTF-8'
 org.gradle.workers.max=4