diff --git a/Gemfile.lock b/Gemfile.lock
index 70d3c95..09a7f7c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,7 +141,7 @@ GEM
     treetop (1.4.11)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.33)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby