diff --git a/Objective-C/Gemfile.lock b/Objective-C/Gemfile.lock
index e35bb4f..69e8b09 100644
--- a/Objective-C/Gemfile.lock
+++ b/Objective-C/Gemfile.lock
@@ -57,7 +57,7 @@ GEM
     netrc (0.11.0)
     ruby-macho (1.3.1)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     xcodeproj (1.7.0)
       CFPropertyList (>= 2.3.3, < 4.0)