diff --git a/Gemfile.lock b/Gemfile.lock
index 9f10c65..7370b84 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -32,7 +32,7 @@ GEM
     coffee-script-source (1.12.2)
     colorator (1.1.0)
     commonmarker (0.23.12)
-    concurrent-ruby (1.3.7)
+    concurrent-ruby (1.3.8)
     connection_pool (3.0.2)
     csv (3.3.5)
     dnsruby (1.74.0)