diff --git a/Gemfile.lock b/Gemfile.lock
index f6829c67..869bb94d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
     colored2 (3.1.2)
     commander (4.6.0)
       highline (~> 2.0.0)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.3.7)
     declarative (0.0.20)
     digest-crc (0.6.5)
       rake (>= 12.0.0, < 14.0.0)