diff --git a/Gemfile.lock b/Gemfile.lock
index e7b7110c..26336d29 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     colorize (1.1.0)
-    concurrent-ruby (1.3.5)
+    concurrent-ruby (1.3.7)
     connection_pool (2.5.3)
     crass (1.0.6)
     database_cleaner-active_record (2.1.0)