diff --git a/gradle.properties b/gradle.properties
index c13a53f63b4..3b540c3f062 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -21,7 +21,7 @@ remoteRoot=konan_tests
 testDataVersion=1226829:id
 kotlinCompilerRepo=https://teamcity.jetbrains.com/guestAuth/app/rest/builds/buildType:(id:Kotlin_dev_CompilerAllPlugins),number:1.3.20-dev-1048,tag:kotlin-native,pinned:true/artifacts/content/maven
 kotlinVersion=1.3.20-dev-1048
-testKotlinVersion=1.3.20-dev-1048
+testKotlinVersion=1.3.20-dev-1206
 konanVersion=1.1.0
 org.gradle.jvmargs='-Dfile.encoding=UTF-8'
 org.gradle.workers.max=4