diff --git a/Gemfile.lock b/Gemfile.lock
index 39c1754d..6eba6951 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -263,7 +263,7 @@ GEM
     tilt (2.0.6)
     timecop (0.8.1)
     tins (1.13.2)
-    tzinfo (1.2.2)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext