diff --git a/Gemfile.lock b/Gemfile.lock
index 79a7fe3..82dea2c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
       netrc (~> 0.11)
     cocoapods-try (1.1.0)
     colored2 (3.1.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.3.7)
     escape (0.0.4)
     ffi (1.11.3)
     fourflusher (2.3.1)