diff --git a/Gemfile.lock b/Gemfile.lock
index ed8dee5..626c6b6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,6 @@ GEM
       nokogiri (= 1.5.10)
       rake
       rdoc
-    json (1.8.0)
     jwt (0.1.8)
       multi_json (>= 1.5)
     minitest (4.7.5)
@@ -42,12 +41,15 @@ GEM
       multi_json (~> 1.0)
       multi_xml (~> 0.5)
       rack (~> 1.2)
+    psych (5.1.0)
+      stringio
     rack (1.5.2)
     rake (10.1.0)
-    rdoc (4.0.1)
-      json (~> 1.4)
+    rdoc (6.5.0)
+      psych (>= 4.0.0)
     redcarpet (3.0.0)
     shoulda-context (1.1.4)
+    stringio (3.0.7)
     yard (0.8.6.2)
 
 PLATFORMS