diff --git a/Gemfile.lock b/Gemfile.lock
index ca6930c..4665856 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -313,7 +313,7 @@ GEM
     turbolinks-source (5.1.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.17)
+    uglifier (4.1.18)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.4.0)
     unicorn (5.4.1)