diff --git a/nixpkgs/pkgs/puma/Gemfile.lock b/nixpkgs/pkgs/puma/Gemfile.lock
index cd31750..1a9aadd 100644
--- a/nixpkgs/pkgs/puma/Gemfile.lock
+++ b/nixpkgs/pkgs/puma/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     nio4r (2.5.2)
-    puma (4.3.3)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.2)