diff --git a/Gemfile.lock b/Gemfile.lock
index 3725d61..c37eea0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -71,6 +71,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.8.0)
+    concurrent-ruby (1.1.5)
     daemons (1.1.9)
     database_cleaner (1.3.0)
     debase (0.1.2)
@@ -116,7 +117,6 @@ GEM
     guard-teaspoon (0.8.0)
       guard (~> 2.2)
       teaspoon (>= 0.8.0)
-    hike (1.2.3)
     hitimes (1.2.2)
     http_parser.rb (0.6.0)
     i18n (0.7.0)
@@ -144,7 +144,7 @@ GEM
     mime-types (2.4.3)
     mini_portile (0.6.2)
     minitest (5.5.1)
-    multi_json (1.10.1)
+    multi_json (1.14.0)
     nenv (0.2.0)
     ng-rails-csrf (0.1.0)
     nokogiri (1.6.6.2)
@@ -158,7 +158,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.6.0)
+    rack (1.6.11)
     rack-livereload (0.3.15)
       rack
     rack-test (0.6.3)
@@ -244,11 +244,9 @@ GEM
       spring (>= 0.9.1)
     spring-commands-teaspoon (0.0.2)
       spring (>= 0.9.1)
-    sprockets (2.12.3)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
+    sprockets (3.7.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
     sprockets-rails (2.2.4)
       actionpack (>= 3.0)
       activesupport (>= 3.0)