diff --git a/Gemfile.lock b/Gemfile.lock
index 9826b44..59177fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,9 +55,9 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.25.1)
     minitest (4.7.5)
-    multi_json (1.8.2)
+    multi_json (1.14.1)
     polyglot (0.3.3)
-    rack (1.5.2)
+    rack (1.5.5)
     rack-test (0.6.2)
       rack (>= 1.0)
     rails (4.0.2)
@@ -96,7 +96,7 @@ GEM
     sdoc (0.3.20)
       json (>= 1.1.3)
       rdoc (~> 3.10)
-    sprockets (2.10.1)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)