diff --git a/Gemfile.lock b/Gemfile.lock
index d2549c9..23c2a47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -293,7 +293,7 @@ GEM
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
     thor (0.19.4)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.6)
     travis-lint (2.0.0)
       json