diff --git a/gradle.properties b/gradle.properties
index 36d597aaeb1..0dc06bc9f3a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,8 +15,8 @@
 #
 
 # A version of the Kotlin "toolchain" (compiler, runtime, stdlib etc) used by the build script.
-buildKotlinVersion=1.3-M1-eap-77
-buildKotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_13M1_Compiler),number:1.3-M1-eap-77,branch:default:any/artifacts/content/maven
+buildKotlinVersion=1.3-M1
+buildKotlinCompilerRepo=http://dl.bintray.com/kotlin/kotlin-eap
 remoteRoot=konan_tests
 testDataVersion=1226829:id
 kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_13M2_CompilerAllPlugins),number:1.3-M2-release-200,tag:kotlin-native,pinned:true,branch:(default:any)/artifacts/content/maven