diff --git a/pkgs/development/python-modules/adext/default.nix b/pkgs/development/python-modules/adext/default.nix
index df8bc1bd889..7b10b0de1b6 100644
--- a/pkgs/development/python-modules/adext/default.nix
+++ b/pkgs/development/python-modules/adext/default.nix
@@ -1,19 +1,24 @@
 { lib
 , buildPythonPackage
-, fetchPypi
+, fetchFromGitHub
 , setuptools-scm
 , alarmdecoder
+, pytestCheckHook
 }:
 
 buildPythonPackage rec {
   pname = "adext";
   version = "0.4.2";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "sha256-Y9AvLgclNZdFnZJDoH6/pf8AqHr3WmwysgpJvWKicHo=";
+  src = fetchFromGitHub {
+    owner = "ajschmidt8";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0h5k9kzms2f0r48pdhsgv8pimk0vsxw8vs0k6880mank8ij914wr";
   };
 
+  SETUPTOOLS_SCM_PRETEND_VERSION = version;
+
   nativeBuildInputs = [
     setuptools-scm
   ];
@@ -22,8 +27,10 @@ buildPythonPackage rec {
     alarmdecoder
   ];
 
-  # Tests are not published yet
-  doCheck = false;
+  checkInputs = [
+    pytestCheckHook
+  ];
+
   pythonImportsCheck = [ "adext" ];
 
   meta = with lib; {