diff --git a/pyproject.toml b/pyproject.toml
index 31ef1d2..4f04791 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -68,7 +68,7 @@ test = [
   "pytest-cov>=7",
 ]
 type = [
-  "ty>=0.0.19,<0.0.25",
+  "ty>=0.0.19",
   { include-group = "test" },
 ]
 lint = [
diff --git a/tests/test_devpi_process.py b/tests/test_devpi_process.py
index ced8834..a2c0f51 100644
--- a/tests/test_devpi_process.py
+++ b/tests/test_devpi_process.py
@@ -70,4 +70,6 @@ def test_create_server_with_pypi(tmp_path: Path) -> None:
 def test_create_server_start_args(tmp_path: Path) -> None:
     with IndexServer(tmp_path, start_args=["--offline-mode"]) as server:
         assert server._process is not None  # noqa: SLF001
-        assert server._process.args[-1] == "--offline-mode"  # type: ignore[index] # noqa: SLF001
+        args = server._process.args  # noqa: SLF001
+        assert isinstance(args, list)
+        assert args[-1] == "--offline-mode"