diff --git a/Gemfile.lock b/Gemfile.lock
index 1e46a21a..a65add00 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -593,7 +593,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.8.2)
-    unicode-display_width (2.2.0)
+    unicode-display_width (2.4.2)
     unicode_utils (1.4.0)
     unobtrusive_flash (3.3.1)
       railties