diff --git a/Gemfile.lock b/Gemfile.lock
index 58e2f41a..4c757030 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -250,7 +250,7 @@ GEM
     tzinfo (0.3.54)
     uglifier (4.1.11)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.3.3)
+    unicode-display_width (1.4.0)
     uuidtools (2.1.5)
     webrat (0.7.3)
       nokogiri (>= 1.2.0)