diff --git a/Gemfile.lock b/Gemfile.lock
index b5a1ba4..3b78c9e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,13 +19,15 @@ GEM
       multi_json (~> 1.0)
     addressable (2.2.2)
     builder (3.0.4)
-    crack (0.1.8)
+    crack (0.4.3)
+      safe_yaml (~> 1.0.0)
     i18n (0.6.1)
     multi_json (1.6.1)
     rake (0.8.7)
     reactive_resource (0.7.1)
       activeresource (>= 3.1)
       activesupport (>= 3.1)
+    safe_yaml (1.0.5)
     shoulda (2.11.3)
     webmock (1.6.2)
       addressable (>= 2.2.2)