diff --git a/Gemfile.lock b/Gemfile.lock
index 23731cd..fb81e61 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -170,11 +170,11 @@ 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)
     timers (4.0.1)
       hitimes
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     xpath (2.0.0)
       nokogiri (~> 1.3)