diff --git a/pkgs/development/python-modules/django-htmx/default.nix b/pkgs/development/python-modules/django-htmx/default.nix
index 0e60a5ae5aef..51e6f62fecf2 100644
--- a/pkgs/development/python-modules/django-htmx/default.nix
+++ b/pkgs/development/python-modules/django-htmx/default.nix
@@ -1,32 +1,34 @@
 {
   lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  setuptools,
   asgiref,
+  buildPythonPackage,
   django,
-  pytestCheckHook,
+  fetchFromGitHub,
   pytest-django,
+  pytestCheckHook,
+  pythonOlder,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "django-htmx";
-  version = "1.19.0";
+  version = "1.21.0";
   pyproject = true;
 
+  disabled = pythonOlder "3.9";
+
   src = fetchFromGitHub {
     owner = "adamchainz";
     repo = "django-htmx";
     rev = version;
-    hash = "sha256-nSutErUkFafKjBswhC+Lrn39MgCbCrzttAx1a+qt1so=";
+    hash = "sha256-2zmCJ+oHvw21lvCgAFja2LRPA6LNWep4uRor0z1Ft6g=";
   };
 
   build-system = [ setuptools ];
 
-  dependencies = [
-    asgiref
-    django
-  ];
+  buildInputs = [ django ];
+
+  dependencies = [ asgiref ];
 
   nativeCheckInputs = [
     pytestCheckHook
@@ -38,6 +40,7 @@ buildPythonPackage rec {
   meta = {
     description = "Extensions for using Django with htmx";
     homepage = "https://github.com/adamchainz/django-htmx";
+    changelog = "https://github.com/adamchainz/django-htmx/blob/${version}/docs/changelog.rst";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ minijackson ];
   };