diff --git a/Gemfile.lock b/Gemfile.lock
index 338ee071df..4937175762 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,8 @@ GEM
       rest-client
       simplecov (>= 0.7)
       thor
-    crack (0.3.1)
+    crack (0.4.5)
+      rexml
     diff-lcs (1.1.3)
     guard (1.5.4)
       listen (>= 0.4.2)
@@ -31,6 +32,7 @@ GEM
       slop (~> 3.3.1)
     rest-client (1.6.7)
       mime-types (>= 1.16)
+    rexml (3.2.5)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
       rspec-expectations (~> 2.12.0)