diff --git a/Gemfile.lock b/Gemfile.lock
index 234e7b6f1..8ff7c3f0a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -617,7 +617,7 @@ GEM
       unf (~> 0.1.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    tzinfo-data (1.2018.4)
+    tzinfo-data (1.2018.5)
       tzinfo (>= 1.0.0)
     unf (0.1.4)
       unf_ext