diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b6d430284..7f7aacc4c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -7,7 +7,7 @@ default_language_version:
   python: python3.11 # NOTE: sync with .python-version-default
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.12.12"
+    rev: "v0.14.0"
     hooks:
       - id: ruff
         alias: r
@@ -19,7 +19,7 @@ repos:
         verbose: true
         types_or: [python, pyi, jupyter]
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: "v1.17.1"
+    rev: "v1.18.2"
     hooks:
       - id: mypy
         args: [--strict, --ignore-missing-imports]
diff --git a/src/openllm/common.py b/src/openllm/common.py
index c3646ba69..00c7f1635 100644
--- a/src/openllm/common.py
+++ b/src/openllm/common.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import asyncio, asyncio.subprocess, functools, hashlib, io, json, os, pathlib, signal, subprocess, sys, sysconfig, typing, shlex
-import typer, typer.core, pydantic, questionary, pyaml, yaml
+import typer, pydantic, questionary, pyaml, yaml
 
 from collections import UserDict
 from contextlib import asynccontextmanager, contextmanager
diff --git a/src/openllm/repo.py b/src/openllm/repo.py
index 50db42681..ddad9089f 100644
--- a/src/openllm/repo.py
+++ b/src/openllm/repo.py
@@ -167,7 +167,6 @@ def _clone_repo(repo: RepoInfo) -> None:
         ['git', 'clone', '--depth=1', '-b', repo.branch, repo.url, str(repo.path)], check=True
       )
   except (subprocess.CalledProcessError, FileNotFoundError):
-    import dulwich
     import dulwich.porcelain
 
     # Dulwich doesn't have easy output suppression, but we rarely get here