diff --git a/Gemfile.lock b/Gemfile.lock
index 205703f81..2302d9dde 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       netrc (~> 0.11)
     cocoapods-try (1.2.0)
     colored2 (3.1.2)
-    concurrent-ruby (1.2.3)
+    concurrent-ruby (1.3.7)
     connection_pool (2.4.1)
     drb (2.2.0)
       ruby2_keywords