diff --git a/sample_app/Gemfile.lock b/sample_app/Gemfile.lock
index 54b6f2ba..3b41e882 100644
--- a/sample_app/Gemfile.lock
+++ b/sample_app/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     method_source (0.8.1)
     mime-types (1.23)
     mini_portile (0.5.1)
-    multi_json (1.7.7)
+    multi_json (1.7.9)
     multi_test (0.0.1)
     nokogiri (1.6.0)
       mini_portile (~> 0.5.0)
@@ -86,7 +86,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.4.5)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.3)
@@ -123,7 +123,7 @@ GEM
       rspec-expectations (~> 2.14.0)
       rspec-mocks (~> 2.14.0)
     slop (3.4.5)
-    sprockets (2.2.2)
+    sprockets (2.2.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)