diff --git a/Gemfile.lock b/Gemfile.lock
index 614344a..fcbf03b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -176,10 +176,10 @@ GEM
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.1.4)
+    sprockets-rails (2.2.0)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
-      sprockets (~> 2.8)
+      sprockets (>= 2.8, < 4.0)
     sqlite3 (1.3.9)
     term-ansicolor (1.3.0)
       tins (~> 1.0)