diff --git a/Gemfile.lock b/Gemfile.lock
index fe71c4b..0371f76 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
       nokogiri (>= 1.5.10)
       rake
       rdoc
-    json (1.8.1)
+    json (1.8.6)
     jwt (1.2.0)
     kgio (2.9.2)
     method_source (0.8.2)
@@ -102,6 +102,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
+    psych (5.1.0)
+      stringio
     rack (1.5.2)
     rack-attack (4.2.0)
       rack
@@ -111,8 +113,8 @@ GEM
       rack (>= 1.0)
     raindrops (0.13.0)
     rake (10.4.2)
-    rdoc (4.2.0)
-      json (~> 1.4)
+    rdoc (6.5.0)
+      psych (>= 4.0.0)
     rest-client (1.8.0)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
@@ -135,6 +137,7 @@ GEM
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
     slop (3.6.0)
+    stringio (3.0.7)
     thread_safe (0.3.4)
     tilt (1.4.1)
     tzinfo (1.2.2)