diff --git a/Gemfile.lock b/Gemfile.lock
index f8072c1..e44dedc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -994,7 +994,7 @@ GEM
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.1.1)
     rack-test (1.1.0)