diff --git a/Gemfile.lock b/Gemfile.lock
index ead28d6..46c5194 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -96,7 +96,7 @@ GEM
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.37)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby