diff --git a/pkgs/development/python-modules/inject/default.nix b/pkgs/development/python-modules/inject/default.nix
index c2ecb109732e..50e2d5c8352e 100644
--- a/pkgs/development/python-modules/inject/default.nix
+++ b/pkgs/development/python-modules/inject/default.nix
@@ -4,22 +4,25 @@
   hatch-vcs,
   hatchling,
   lib,
-  nix-update-script,
   pytestCheckHook,
 }:
 
 buildPythonPackage (finalAttrs: {
   pname = "inject";
-  version = "5.3.0";
+  version = "5.3.0-unstable-2026-01-05";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ivankorobkov";
     repo = "python-inject";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-c/OpEsT9KF7285xfD+VRorrNHn3r9IPp/ts9JHyGK9s=";
+    rev = "2ca60abc5370cd91d87e5a21ac373d0ca710f76d";
+    hash = "sha256-FumossBUGwp1XxWthx3gpIietvZsmPpkd52y9jjVKjQ=";
   };
 
+  env.SETUPTOOLS_SCM_PRETEND_VERSION =
+    assert lib.hasInfix "unstable" finalAttrs.version;
+    builtins.head (lib.splitString "-" finalAttrs.version);
+
   build-system = [
     hatchling
     hatch-vcs
@@ -31,12 +34,10 @@ buildPythonPackage (finalAttrs: {
 
   pythonImportsCheck = [ "inject" ];
 
-  passthru.updateScript = nix-update-script { };
-
   meta = {
     description = "Python dependency injection framework";
     homepage = "https://github.com/ivankorobkov/python-inject";
-    changelog = "https://github.com/ivankorobkov/python-inject/blob/${finalAttrs.src.tag}/CHANGES.md";
+    changelog = "https://github.com/ivankorobkov/python-inject/blob/${finalAttrs.src.rev}/CHANGES.md";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ PerchunPak ];
   };