diff --git a/Gemfile.lock b/Gemfile.lock
index 090dab9..b706304 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -206,12 +206,12 @@ GEM
       eventmachine (>= 1.0.0)
       rack (>= 1.0.0)
     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)