diff --git a/pkgs/games/openttd/default.nix b/pkgs/games/openttd/default.nix
index 3071142fc924..7e91b69d700f 100644
--- a/pkgs/games/openttd/default.nix
+++ b/pkgs/games/openttd/default.nix
@@ -29,11 +29,11 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "openttd";
-  version = "13.3";
+  version = "13.4";
 
   src = fetchurl {
     url = "https://cdn.openttd.org/openttd-releases/${version}/${pname}-${version}-source.tar.xz";
-    hash = "sha256-qvoW0vtnFlE0xzqIj3n3pe19oXoEz26ez2csnLiecZI=";
+    hash = "sha256-Kh3roBv+WOIYiHn0UMP6TzgZJxq0m/NI3WZUXwQNFG8=";
   };
 
   nativeBuildInputs = [ cmake makeWrapper ];
diff --git a/pkgs/games/openttd/jgrpp.nix b/pkgs/games/openttd/jgrpp.nix
index 46fe0ab60ac4..da113ed1afc2 100644
--- a/pkgs/games/openttd/jgrpp.nix
+++ b/pkgs/games/openttd/jgrpp.nix
@@ -2,14 +2,20 @@
 
 openttd.overrideAttrs (oldAttrs: rec {
   pname = "openttd-jgrpp";
-  version = "0.54.1";
+  version = "0.54.4";
 
   src = fetchFromGitHub rec {
     owner = "JGRennison";
     repo = "OpenTTD-patches";
     rev = "jgrpp-${version}";
-    hash = "sha256-MfYh2a3wjWB/5zgTE8AAIREI2OEhykqF0Rad7I+912U=";
+    hash = "sha256-bTpHlKffQbANXIrAn9WSEK/PEzBW1nzaHhGKIyclAo0=";
   };
 
   buildInputs = oldAttrs.buildInputs ++ [ zstd ];
+
+  meta = {
+    homepage = "https://github.com/JGRennison/OpenTTD-patches";
+    changelog = "https://github.com/JGRennison/OpenTTD-patches/blob/jgrpp-${version}/jgrpp-changelog.md";
+  };
+
 })