diff --git a/Gemfile.lock b/Gemfile.lock
index dd920ea..a8e89d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,8 @@ GEM
       rack (~> 1.1.0)
     activesupport (2.3.14)
     addressable (2.2.7)
-    crack (0.3.1)
+    crack (0.4.3)
+      safe_yaml (~> 1.0.0)
     curb (0.8.0)
     em-http-request (0.2.11)
       addressable (>= 2.0.0)
@@ -27,6 +28,7 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
+    safe_yaml (1.0.5)
     typhoeus (0.3.3)
       mime-types
     webmock (1.8.6)