diff --git a/.overcommit/Gemfile.lock b/.overcommit/Gemfile.lock
index 4bf0413..67ece70 100644
--- a/.overcommit/Gemfile.lock
+++ b/.overcommit/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
     ast (2.4.2)
     brakeman (5.2.3)
     childprocess (4.1.0)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.2.3)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
     iniparse (1.5.0)
@@ -61,7 +61,7 @@ GEM
     rubocop-rspec (2.10.0)
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
-    tzinfo (2.0.4)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.1.0)