diff --git a/Gemfile.lock b/Gemfile.lock
index 040bac565..625e227f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     susy (1.0.9)
       compass (>= 0.12.2)
       sass (>= 3.2.0)
-    thor (0.17.0)
+    thor (1.4.0)
 
 PLATFORMS
   ruby