diff --git a/pkgs/development/tools/knightos/z80e/default.nix b/pkgs/development/tools/knightos/z80e/default.nix
index a089511fb684..6d66f141e912 100644
--- a/pkgs/development/tools/knightos/z80e/default.nix
+++ b/pkgs/development/tools/knightos/z80e/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "z80e";
-  version = "0.5.2";
+  version = "0.5.3";
 
   src = fetchFromGitHub {
     owner = "KnightOS";
     repo = "z80e";
     rev = version;
-    sha256 = "0gdv17ynjd6zf3i4hkimd89xkrd8kxas3bf8d5sq54fdicapvkzc";
+    sha256 = "sha256-FQMYHxKxHEP+x98JbGyjaM0OL8QK/p3epsAWvQkv6bc=";
   };
 
   nativeBuildInputs = [ cmake knightos-scas ];