diff --git a/Gemfile.lock b/Gemfile.lock
index 99d664c13b..591954e78e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -246,7 +246,7 @@ GEM
       sync
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.0)
+    uglifier (4.2.1)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (2.6.0)
     webrick (1.8.1)