diff --git a/Gemfile.lock b/Gemfile.lock
index e3ba153..1128797 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,7 +59,7 @@ GEM
       capybara (>= 2.3.0, < 2.14.0)
       json
     coderay (1.1.1)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     database_cleaner (1.5.3)
@@ -165,7 +165,7 @@ GEM
     pry-rails (0.3.4)
       pry (>= 0.9.10)
     public_suffix (2.0.5)
-    rack (1.6.8)
+    rack (1.6.12)
     rack-test (0.6.3)
       rack (>= 1.0)
     rack-timeout (0.4.2)
@@ -242,7 +242,7 @@ GEM
     spring (1.7.1)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.0)