diff --git a/Gemfile.lock b/Gemfile.lock
index 96b9734e..f92be178 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     builder (3.3.0)
     byebug (11.1.3)
     climate_control (1.2.0)
-    concurrent-ruby (1.3.2)
+    concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
     crack (1.0.0)
       bigdecimal