diff --git a/slacklinegroups/Gemfile.lock b/slacklinegroups/Gemfile.lock
index e793f8e..808926b 100644
--- a/slacklinegroups/Gemfile.lock
+++ b/slacklinegroups/Gemfile.lock
@@ -309,7 +309,7 @@ GEM
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unicode-display_width (1.7.0)
     warden (1.2.8)