diff --git a/Gemfile.lock b/Gemfile.lock
index ad8eb66..90236bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       bundler (>= 1.2.0)
       thor (~> 1.0)
     colorator (1.1.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     csv (3.3.5)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)