diff --git a/Gemfile.lock b/Gemfile.lock
index 940dc52f9..15a50d2e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,9 +109,9 @@ GEM
     chunky_png (1.3.6)
     cliver (0.3.2)
     coderay (1.1.1)
-    coffee-rails (4.1.1)
+    coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
-      railties (>= 4.0.0, < 5.1.x)
+      railties (>= 4.0.0, < 5.2.x)
     coffee-script (2.4.1)
       coffee-script-source
       execjs