diff --git a/Gemfile.lock b/Gemfile.lock
index 22b9241..d2e592b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
       tilt (>= 1.3, < 3)
     thread_safe (0.3.6)
     tilt (2.0.8)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     tzinfo-data (1.2018.5)
       tzinfo (>= 1.0.0)