diff --git a/Gemfile.lock b/Gemfile.lock
index 7af8aff..afe6988 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,7 +98,7 @@ GEM
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.35)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby