diff --git a/pkgs/development/python-modules/sigstore-models/default.nix b/pkgs/development/python-modules/sigstore-models/default.nix
new file mode 100644
index 000000000000..2a45c9cdef5a
--- /dev/null
+++ b/pkgs/development/python-modules/sigstore-models/default.nix
@@ -0,0 +1,41 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pydantic,
+  typing-extensions,
+  uv-build,
+  pytestCheckHook,
+}:
+
+buildPythonPackage rec {
+  pname = "sigstore-models";
+  version = "0.0.5";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "astral-sh";
+    repo = "sigstore-models";
+    tag = "v${version}";
+    hash = "sha256-zlIZzfgHZPEuiZu3JNX74Cg1jPNaO1HUhMtpxoyOoqk=";
+  };
+
+  build-system = [ uv-build ];
+
+  dependencies = [
+    pydantic
+    typing-extensions
+  ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "sigstore_models" ];
+
+  meta = {
+    description = "Pydantic-based, protobuf-free data models for Sigstore";
+    homepage = "https://github.com/astral-sh/sigstore-models";
+    changelog = "https://github.com/astral-sh/sigstore-models/releases/tag/${src.tag}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cb45c286334a..23911cd68d0f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16753,6 +16753,8 @@ self: super: with self; {
 
   sigstore = callPackage ../development/python-modules/sigstore { };
 
+  sigstore-models = callPackage ../development/python-modules/sigstore-models { };
+
   sigstore-protobuf-specs = callPackage ../development/python-modules/sigstore-protobuf-specs { };
 
   sigstore-rekor-types = callPackage ../development/python-modules/sigstore-rekor-types { };