diff --git a/Gemfile.lock b/Gemfile.lock
index d38b67b..71f1f32 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       rack (>= 1, < 3)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.3)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
 
 PLATFORMS