diff --git a/Gemfile.lock b/Gemfile.lock
index 9ac53c779..c5aa293e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,7 +77,8 @@ GEM
       compass (>= 0.12.2, < 0.14)
     configurate (0.0.8)
     connection_pool (1.0.0)
-    crack (0.3.2)
+    crack (0.4.0)
+      safe_yaml (~> 0.9.0)
     cucumber (1.3.2)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)