diff --git a/Gemfile.lock b/Gemfile.lock
index 124cc1f..03468d6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
     builder (3.2.4)
     cancancan (3.5.0)
     coderay (1.1.3)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crass (1.0.6)
     date (3.5.1)