diff --git a/Gemfile.lock b/Gemfile.lock
index d957f2b..36fe63d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,12 +90,12 @@ GEM
       activesupport (>= 3.0)
       sprockets (~> 2.8)
     thor (0.19.1)
-    thread_safe (0.3.3)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (1.1.0)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (2.5.0)
       execjs (>= 0.3.0)