diff --git a/Gemfile.lock b/Gemfile.lock
index e48fff7..548ed07 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,11 +69,11 @@ GEM
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
 
 PLATFORMS