diff --git a/demo/Gemfile.lock b/demo/Gemfile.lock
index 054eec4..ed2640d 100644
--- a/demo/Gemfile.lock
+++ b/demo/Gemfile.lock
@@ -51,7 +51,7 @@ 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)
     fourflusher (2.2.0)
     fuzzy_match (2.0.4)