diff --git a/constants.properties b/constants.properties
index 20285f8fef..c0de1c8c65 100644
--- a/constants.properties
+++ b/constants.properties
@@ -1,5 +1,5 @@
 gradlePluginsVersion=0.12.4
-kotlinVersion=1.1.2
+kotlinVersion=1.1.1
 guavaVersion=21.0
 bouncycastleVersion=1.56
 typesafeConfigVersion=1.3.1