diff --git a/Gemfile.lock b/Gemfile.lock
index 1fc04a9..7962a35 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,9 +103,9 @@ GEM
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     thor (0.19.4)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.6)
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (3.0.4)
       execjs (>= 0.3.0, < 3)