diff --git a/Gemfile.lock b/Gemfile.lock
index 6e16df1f..6da52e2e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -154,7 +154,7 @@ GEM
       faraday-multipart (~> 1.0, >= 1.0.4)
       ostruct
     cocoon (1.2.15)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (2.5.5)
     countable-rails (0.0.1)
       railties (>= 3.1)