diff --git a/pkgs/development/python-modules/django-anymail/default.nix b/pkgs/development/python-modules/django-anymail/default.nix
index ccc2ef7b9c1e..a01df2135750 100644
--- a/pkgs/development/python-modules/django-anymail/default.nix
+++ b/pkgs/development/python-modules/django-anymail/default.nix
@@ -15,7 +15,7 @@
 
 buildPythonPackage rec {
   pname = "django-anymail";
-  version = "12.0";
+  version = "13.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -24,7 +24,7 @@ buildPythonPackage rec {
     owner = "anymail";
     repo = "django-anymail";
     tag = "v${version}";
-    hash = "sha256-TuEEwxwgZVv97Ns4sRWdQjaNymE03nj8CTiU9S6ynZ8=";
+    hash = "sha256-0KqpgS71QwTfLp4I8p1An6sCnGcvxTNB4xy4LaFFl8E=";
   };
 
   build-system = [ hatchling ];
@@ -55,7 +55,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Django email backends and webhooks for Mailgun";
     homepage = "https://github.com/anymail/django-anymail";
-    changelog = "https://github.com/anymail/django-anymail/blob/v${version}/CHANGELOG.rst";
+    changelog = "https://github.com/anymail/django-anymail/blob/${src.tag}/CHANGELOG.rst";
     license = licenses.bsd3;
     maintainers = with maintainers; [ onny ];
   };