diff --git a/Gemfile.lock b/Gemfile.lock
index 24f185f..d6d2b15 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,8 @@ GEM
     calc (1.0.0)
     classifier (1.3.1)
       stemmer (>= 1.0.0)
-    crack (0.1.8)
+    crack (0.4.3)
+      safe_yaml (~> 1.0.0)
     meme_generator (1.9)
       nokogiri (~> 1.4)
     metaclass (0.0.1)
@@ -28,6 +29,7 @@ GEM
     rack-test (0.6.2)
       rack (>= 1.0)
     rake (10.0.4)
+    safe_yaml (1.0.5)
     simplecov (0.4.2)
       simplecov-html (~> 0.4.4)
     simplecov-html (0.4.5)