diff --git a/Gemfile.lock b/Gemfile.lock
index 728495a1..17307315 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -95,7 +95,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     crass (1.0.6)
     csv (3.3.5)
     d3-rails (7.8.5)