diff --git a/build.gradle.kts b/build.gradle.kts
index 52af9ceaf70..0eadd09ee21 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ buildscript {
     extra["defaultSnapshotVersion"] = "1.3-SNAPSHOT"
     val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
 
-    kotlinBootstrapFrom(BootstrapOption.BintrayBootstrap("1.3.70-dev-1140", cacheRedirectorEnabled))
+    kotlinBootstrapFrom(BootstrapOption.BintrayBootstrap("1.3.70-dev-1231", cacheRedirectorEnabled))
 
     repositories {
         bootstrapKotlinRepo?.let(::maven)