diff --git a/numass-viewer/build.gradle b/numass-viewer/build.gradle
index ba7bc9e5..d0cc41f8 100644
--- a/numass-viewer/build.gradle
+++ b/numass-viewer/build.gradle
@@ -1,5 +1,5 @@
 plugins{
-    id "org.jetbrains.kotlin.jvm" version '1.1.3'
+    id "org.jetbrains.kotlin.jvm" version '1.1.4'
     id "application"
 }