diff --git a/Gemfile.lock b/Gemfile.lock
index 6aff2053..00a7f6ab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -585,7 +585,7 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (1.2.9)
       thread_safe (~> 0.1)
-    uglifier (4.1.20)
+    uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext