diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7644c00..2304994 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,7 +5,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.29.4
+    rev: 0.30.0
     hooks:
       - id: check-github-workflows
         args: ["--verbose"]
@@ -24,13 +24,13 @@ repos:
     hooks:
       - id: pyproject-fmt
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.8.0"
+    rev: "v0.8.2"
     hooks:
       - id: ruff-format
       - id: ruff
         args: ["--fix", "--unsafe-fixes", "--exit-non-zero-on-fix"]
   - repo: https://github.com/rbubley/mirrors-prettier
-    rev: "v3.3.3"
+    rev: "v3.4.2"
     hooks:
       - id: prettier
         args: ["--print-width=120", "--prose-wrap=always"]
diff --git a/src/devpi_process/__init__.py b/src/devpi_process/__init__.py
index 7f6ef3e..050bedc 100644
--- a/src/devpi_process/__init__.py
+++ b/src/devpi_process/__init__.py
@@ -149,7 +149,7 @@ def _keep_draining() -> None:
 
     def _drain_stdout(self) -> Iterator[str]:
         process = cast("Popen[str]", self._process)
-        stdout = cast(IO[str], process.stdout)
+        stdout = cast("IO[str]", process.stdout)
         while True:
             if process.poll() is not None:  # pragma: no cover
                 print(f"devpi server with pid {process.pid} at {self._server_dir} died")  # noqa: T201
@@ -211,7 +211,7 @@ def __repr__(self) -> str:
 def _find_free_port() -> int:
     with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as socket_handler:
         socket_handler.bind(("", 0))
-        return cast(int, socket_handler.getsockname()[1])
+        return cast("int", socket_handler.getsockname()[1])
 
 
 __all__ = [