diff --git a/Gemfile.lock b/Gemfile.lock
index 7923586..6eb1c09 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
   specs:
     codecov (0.6.0)
       simplecov (>= 0.15, < 0.22)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.3.7)
     docile (1.4.0)
     dry-auto_inject (0.9.0)
       dry-container (>= 0.3.4)