diff --git a/Gemfile.lock b/Gemfile.lock
index c840d9ad..3c4f3f76 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -231,7 +231,7 @@ GEM
       builder (>= 2.1.2)
       jwt (~> 1.0)
       multi_json (>= 1.3.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (4.1.14)
       execjs (>= 0.3.0, < 3)