diff --git a/Gemfile.lock b/Gemfile.lock
index 52249fb..5c1338a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,7 @@ GEM
       simplecov-html (~> 0.5.3)
     simplecov-html (0.5.3)
     sqlite3 (1.3.5)
-    tzinfo (0.3.31)
+    tzinfo (0.3.61)
 
 PLATFORMS
   ruby