diff --git a/Gemfile.lock b/Gemfile.lock
index b8357b1..45f66b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
       public_suffix (>= 2.0.2, < 6.0)
     bigdecimal (3.1.8)
     colorator (1.1.0)
-    concurrent-ruby (1.2.3)
+    concurrent-ruby (1.3.1)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)