diff --git a/gradle.properties b/gradle.properties
index 46d7160ba59..8fe8a40658e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,12 +15,12 @@
 #
 
 # A version of the Kotlin "toolchain" (compiler, runtime, stdlib etc) used by the build script.
-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
+buildKotlinVersion=1.3.50-dev-44
+buildKotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-44,pinned:true/artifacts/content/maven
 remoteRoot=konan_tests
-kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-44,branch:default:true,pinned:true/artifacts/content/maven
-kotlinVersion=1.3.50-dev-44
-testKotlinVersion=1.3.50-dev-44
+kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_Compiler),number:1.3.50-dev-67,branch:default:true,pinned:true/artifacts/content/maven
+kotlinVersion=1.3.50-dev-67
+testKotlinVersion=1.3.50-dev-67
 # See https://teamcity.jetbrains.com/project.html?projectId=Kotlin_KotlinNativeShared&tab=projectOverview
 sharedRepo=https://dl.bintray.com/jetbrains/kotlin-native-dependencies
 sharedVersion=1.0-dev-57