diff --git a/Gemfile.lock b/Gemfile.lock
index 1fb098e..46033d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,7 +111,7 @@ GEM
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.31)
+    tzinfo (0.3.61)
     yard (0.7.4)
 
 PLATFORMS