diff --git a/pkgs/games/openttd/jgrpp.nix b/pkgs/games/openttd/jgrpp.nix
index a0c70e463b20..12f4660ba3d4 100644
--- a/pkgs/games/openttd/jgrpp.nix
+++ b/pkgs/games/openttd/jgrpp.nix
@@ -2,13 +2,13 @@
 
 openttd.overrideAttrs (oldAttrs: rec {
   pname = "openttd-jgrpp";
-  version = "0.47.1";
+  version = "0.50.3";
 
   src = fetchFromGitHub rec {
     owner = "JGRennison";
     repo = "OpenTTD-patches";
     rev = "jgrpp-${version}";
-    hash = "sha256-AMd2KXy/ODByeV9CkEd51KbE/+fZ8Us3WzsWCnn7nh0=";
+    hash = "sha256-VJ8Qd4wiFbX/aY8pEWlh9wEjML0c7P8yrOC1fiQD7ts=";
   };
 
   buildInputs = oldAttrs.buildInputs ++ [ zstd ];