diff --git a/Gemfile.lock b/Gemfile.lock
index 9a0d00d..f93167f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,11 +94,11 @@ GEM
       sprockets (>= 2.8, < 4.0)
     sqlite3 (1.3.10)
     thor (0.19.1)
-    thread_safe (0.3.4)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     turbolinks (2.5.2)
       coffee-rails
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (2.5.3)
       execjs (>= 0.3.0)