diff --git a/Gemfile.lock b/Gemfile.lock
index 8eaa218..4693e98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -242,7 +242,7 @@ GEM
     simplecov-rcov (0.2.3)
       simplecov (>= 0.4.1)
     slop (3.6.0)
-    spring (1.6.3)
+    spring (1.6.4)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
     spring-watcher-listen (2.0.0)