diff --git a/Gemfile.lock b/Gemfile.lock
index ac1f3bb..38a1fc4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,7 +16,6 @@ GEM
       git (>= 1.2.5)
       rake
       rdoc
-    json (1.6.6)
     net-scp (1.0.4)
       net-ssh (>= 1.99.1)
     net-sftp (2.0.5)
@@ -24,10 +23,12 @@ GEM
     net-ssh (2.3.0)
     net-ssh-gateway (1.1.0)
       net-ssh (>= 1.99.1)
+    psych (4.0.4)
+      stringio
     rake (0.9.2.2)
     rchardet (1.8.0)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.4.0)
+      psych (>= 4.0.0)
     rspec (2.9.0)
       rspec-core (~> 2.9.0)
       rspec-expectations (~> 2.9.0)
@@ -36,6 +37,7 @@ GEM
     rspec-expectations (2.9.1)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.9.0)
+    stringio (3.0.2)
 
 PLATFORMS
   ruby