diff --git a/pkgs/development/python-modules/ament-package/default.nix b/pkgs/development/python-modules/ament-package/default.nix
index 4cd2b540770b..9af03c49e56e 100644
--- a/pkgs/development/python-modules/ament-package/default.nix
+++ b/pkgs/development/python-modules/ament-package/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "ament-package";
-  version = "0.18.2";
+  version = "8";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ament";
     repo = "ament_package";
-    tag = version;
-    hash = "sha256-m0tDgbjytBKhdqZrSmhKHRm69BZK54NHWmo+O5J8m6Q=";
+    tag = "release-alpha${version}";
+    hash = "sha256-KaP75+95mRmSO0bRDy0LVG+kx1Z4YDn5edsvKq+UXeE=";
   };
 
   build-system = [