diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
new file mode 100644
index 00000000000..adf5804ebbd
--- /dev/null
+++ b/.github/workflows/ruff.yml
@@ -0,0 +1,23 @@
+name: Ruff
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v6
+      - name: Install dependencies
+        run: uv sync --group dev
+      - name: Ruff check
+        run: uv run ruff check . --format=github
diff --git a/main.py b/main.py
index 7628fef50d0..613ea0ffea9 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,8 @@
-from pathlib import Path
-import shutil
-import asyncio
 import argparse
+import asyncio
 import logging
+import shutil
+from pathlib import Path
 
 from src import make_curriculum, make_rss
 
diff --git a/pyproject.toml b/pyproject.toml
index 0a2295f5be3..50f3d3ab27c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,34 @@ dev = [
     "jupyter>=1.1.1",
     "notebook>=7.4.7",
     "pandas>=2.3.3",
+    "ruff>=0.14.14",
 ]
 
 [project.scripts]
 static-build = "main:main"
+
+[tool.ruff]
+target-version = "py313"
+line-length = 88
+extend-exclude = ["build", "static"]
+lint.select = [
+    "B",
+    "E",
+    "F",
+    "I",
+    "N",
+    "SIM",
+    "UP",
+]
+
+[tool.ruff.lint.per-file-ignores]
+"src/models/*.py" = ["N815"]
+"src/utils/catalog.py" = ["N806"]
+"src/utils/jw.py" = ["N802", "N806", "N816"]
+"src/utils/tj_rss.py" = ["N802"]
+"tools/bus_data_gen.py" = ["N816"]
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+line-ending = "lf"
diff --git a/src/curriculum.py b/src/curriculum.py
index 2c3c4cfe315..7c2e029e96b 100644
--- a/src/curriculum.py
+++ b/src/curriculum.py
@@ -1,13 +1,13 @@
 import asyncio
-import logging
 from pathlib import Path
+
 from tqdm import tqdm
 
 from .models.course import Course
-from .utils.catalog import get_semesters, get_courses, get_exams
+from .utils.auth import RequestSession, USTCSession
+from .utils.catalog import get_courses, get_exams, get_semesters
 from .utils.jw import update_lectures
-from .utils.tools import save_json, BUILD_DIR
-from .utils.auth import USTCSession, RequestSession
+from .utils.tools import BUILD_DIR, save_json
 
 
 async def fetch_semester(
@@ -36,7 +36,7 @@ async def fetch_semester(
             exams = {}
 
         for course in incomplete_courses:
-            if course.id in exams.keys():
+            if course.id in exams:
                 course.exams = exams[course.id]
 
     sem = asyncio.Semaphore(50)
diff --git a/src/models/course.py b/src/models/course.py
index 073a20f1946..763de5847ba 100644
--- a/src/models/course.py
+++ b/src/models/course.py
@@ -1,8 +1,8 @@
-from typing import Optional
+
 from pydantic import BaseModel
 
-from .lecture import Lecture
 from .exam import Exam
+from .lecture import Lecture
 
 
 class Course(BaseModel):
@@ -13,8 +13,8 @@ class Course(BaseModel):
     teacherName: str
     lectures: list[Lecture]
     exams: list[Exam]
-    dateTimePlacePersonText: Optional[str]
-    courseType: Optional[str]
+    dateTimePlacePersonText: str | None
+    courseType: str | None
     courseGradation: str
     courseCategory: str
     educationType: str
diff --git a/src/models/exam.py b/src/models/exam.py
index 59a5cef331e..2cbe38f65df 100644
--- a/src/models/exam.py
+++ b/src/models/exam.py
@@ -1,5 +1,5 @@
+
 from pydantic import BaseModel
-from typing import Optional
 
 
 class Exam(BaseModel):
@@ -10,5 +10,5 @@ class Exam(BaseModel):
     examType: str
     startHHMM: int
     endHHMM: int
-    examMode: Optional[str]
+    examMode: str | None
     additionalInfo: dict[str, str]
diff --git a/src/models/semester.py b/src/models/semester.py
index b5b7bfa787c..0e1706c13f6 100644
--- a/src/models/semester.py
+++ b/src/models/semester.py
@@ -1,4 +1,5 @@
 import datetime
+
 from pydantic import BaseModel
 
 from .course import Course
@@ -12,7 +13,9 @@ class Semester(BaseModel):
     endDate: int
 
     def __str__(self) -> str:
-        date_fmt = lambda ts: datetime.datetime.fromtimestamp(ts).strftime("%Y-%m-%d")
+        def date_fmt(ts: int) -> str:
+            return datetime.datetime.fromtimestamp(ts).strftime("%Y-%m-%d")
+
         start_date = date_fmt(self.startDate)
         end_date = date_fmt(self.endDate)
         return f"Semester(id={self.id}, name={self.name}, {start_date} - {end_date})"
diff --git a/src/rss.py b/src/rss.py
index f03abe76531..473a878e06a 100644
--- a/src/rss.py
+++ b/src/rss.py
@@ -1,11 +1,12 @@
+import datetime
+from pathlib import Path
+from typing import cast
+
+import feedgenerator
 import feedparser
 import html2text
 import yaml
-from pathlib import Path
 from tqdm import tqdm
-import feedgenerator
-import datetime
-from typing import cast
 
 from .utils.tj_rss import tj_ustc_RSS
 from .utils.tools import BUILD_DIR, RSS_CONFIG_PATH
@@ -58,7 +59,7 @@ async def get_and_clean_feed(url: str, path_to_save: Path):
 
 
 async def make_rss() -> None:
-    with open(RSS_CONFIG_PATH, "r") as f:
+    with open(RSS_CONFIG_PATH) as f:
         config = yaml.safe_load(f)
 
     rss_path = BUILD_DIR / "rss"
diff --git a/src/utils/auth.py b/src/utils/auth.py
index ec5979fa104..c95cd39cf60 100644
--- a/src/utils/auth.py
+++ b/src/utils/auth.py
@@ -1,21 +1,21 @@
-import os
 import logging
-from typing import Optional, Any, Dict
-from pathlib import Path
+import os
 from contextlib import suppress
-
-from pyotp import TOTP, parse_uri
 from enum import Enum
+from pathlib import Path
+from typing import Any
+
 from dotenv import load_dotenv
 from patchright.async_api import (
-    async_playwright,
-    Page,
     Browser,
     BrowserContext,
+    Page,
     Playwright,
+    async_playwright,
 )
+from pyotp import TOTP, parse_uri
 
-from .tools import save_json, cache_dir_from_url
+from .tools import cache_dir_from_url, save_json
 
 
 class RequestSession:
@@ -33,7 +33,7 @@ def __init__(
         self.logger = logging.getLogger(__name__)
 
     async def get(self, url: str, **kwargs: Any):
-        params: Dict[str, Any] = {
+        params: dict[str, Any] = {
             "url": url,
             "timeout": kwargs.get("timeout", self.timeout_ms),
             "fail_on_status_code": kwargs.get(
@@ -49,7 +49,7 @@ async def get(self, url: str, **kwargs: Any):
         return r
 
     async def post(self, url: str, data: Any = None, **kwargs: Any):
-        params: Dict[str, Any] = {
+        params: dict[str, Any] = {
             "url": url,
             "data": data,
             "timeout": kwargs.get("timeout", self.timeout_ms),
@@ -87,14 +87,14 @@ async def post_json(self, url: str, data: Any = None, **kwargs: Any):
 class USTCSession:
     """Context manager for USTC authentication and returns a RequestSession"""
 
-    def __init__(self, headless: bool = True, proxy: Optional[dict] = None):
+    def __init__(self, headless: bool = True, proxy: dict | None = None):
         self.headless = headless
         self.proxy = proxy
         self.playwright: Playwright
         self.browser: Browser
         self.context: BrowserContext
         self.page: Page
-        self.totp: Optional[TOTP] = None
+        self.totp: TOTP | None = None
         self.logger = logging.getLogger(__name__)
 
         load_dotenv()
@@ -103,7 +103,8 @@ def __init__(self, headless: bool = True, proxy: Optional[dict] = None):
         self.password = os.getenv("USTC_PASSPORT_PASSWORD", "")
         if self.username == "" or self.password == "":
             raise ValueError(
-                "USTC_PASSPORT_USERNAME and USTC_PASSPORT_PASSWORD must be set in environment variables"
+                "USTC_PASSPORT_USERNAME and USTC_PASSPORT_PASSWORD must be set in "
+                "environment variables"
             )
         self.totp_url = os.getenv("USTC_PASSPORT_TOTP_URL", "")
 
@@ -251,7 +252,7 @@ async def detect_login_state() -> LoginState:
                 self.logger.error(f"login error={e}")
                 return False
 
-        self.logger.info(f"login failed")
+        self.logger.info("login failed")
         return False
 
     async def _after_login(self):
diff --git a/src/utils/catalog.py b/src/utils/catalog.py
index a186eb9a19b..c1d90f4bef2 100644
--- a/src/utils/catalog.py
+++ b/src/utils/catalog.py
@@ -1,12 +1,12 @@
 import asyncio
 
-from ..models import Semester, Course, Exam
+from ..models import Course, Exam, Semester
+from .auth import RequestSession
 from .tools import (
-    raw_date_to_unix_timestamp,
     compose_start_end,
     join_nonempty,
+    raw_date_to_unix_timestamp,
 )
-from .auth import RequestSession
 
 
 async def get_semesters(session: RequestSession) -> list[Semester]:
diff --git a/src/utils/jw.py b/src/utils/jw.py
index 8511ac64a20..2b08e520d1b 100644
--- a/src/utils/jw.py
+++ b/src/utils/jw.py
@@ -1,13 +1,12 @@
 import logging
 
 from ..models import Course, Lecture
+from .auth import RequestSession
 from .tools import (
     cache_dir_from_url,
     compose_start_end,
     save_json,
 )
-from .auth import RequestSession
-
 
 indexStartTimes: dict[int, int] = {
     1: 7 * 60 + 50,
@@ -55,9 +54,9 @@ def cleanLectures(lectures: list[Lecture]) -> list[Lecture]:
     for lecture in lectures:
         for r in result:
             if lecture.startDate >= r.startDate and lecture.endDate <= r.endDate:
-                if not lecture.teacherName in r.teacherName:
+                if lecture.teacherName not in r.teacherName:
                     r.teacherName += "," + lecture.teacherName
-                if not lecture.location in r.location:
+                if lecture.location not in r.location:
                     r.location += "," + lecture.location
                 break
             elif lecture.endDate == r.startDate:
diff --git a/src/utils/tj_rss.py b/src/utils/tj_rss.py
index 0f16a55024a..5c0dc52156d 100644
--- a/src/utils/tj_rss.py
+++ b/src/utils/tj_rss.py
@@ -18,8 +18,14 @@
 description = "体育教学中心，http://www.tj.ustc.edu.cn"
 
 headers = {
-    "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
-    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.57",
+    "Accept": (
+        "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,"
+        "image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7"
+    ),
+    "user-agent": (
+        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
+        "(KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.57"
+    ),
 }
 
 
@@ -79,7 +85,7 @@ def tj_ustc_RSS(output_dir: Path | str):
     fg.description(description)
     fg.link(href="http://www.tj.ustc.edu.cn/tzgg/list.htm", rel="alternate")
     fg.language("zh-CN")
-    fg.lastBuildDate(datetime.datetime.utcnow().astimezone(tz=datetime.timezone.utc))
+    fg.lastBuildDate(datetime.datetime.utcnow().astimezone(tz=datetime.UTC))
     fg.ttl(5)
 
     for item in items:
diff --git a/src/utils/tools.py b/src/utils/tools.py
index af6d52a0d8a..98bea26f84e 100644
--- a/src/utils/tools.py
+++ b/src/utils/tools.py
@@ -1,10 +1,12 @@
+from collections.abc import Iterable
 from datetime import datetime
 from json import dump
 from pathlib import Path
+from typing import Any
+from urllib.parse import urlparse
+
 from pydantic.json import pydantic_encoder
 from pytz import timezone
-from typing import Any, Iterable, Tuple
-from urllib.parse import urlparse
 
 tz = timezone("Asia/Shanghai")
 
@@ -29,7 +31,7 @@ def save_json(obj: Any, path: Path) -> None:
         dump(obj, f, default=pydantic_encoder, ensure_ascii=False)
 
 
-def compose_start_end(date_str: str, start_hhmm: int, end_hhmm: int) -> Tuple[int, int]:
+def compose_start_end(date_str: str, start_hhmm: int, end_hhmm: int) -> tuple[int, int]:
     def compose_datetime(date_str: str, hhmm: int) -> int:
         base = raw_date_to_unix_timestamp(date_str)
         return base + int(hhmm // 100) * 3600 + int(hhmm % 100) * 60
@@ -48,7 +50,7 @@ def cache_dir_from_url(url: str) -> Path:
         "jw.ustc.edu.cn": "jw",
     }
 
-    if host in host_abbrs.keys():
+    if host in host_abbrs:
         host = host_abbrs[host]
 
     return Path("build") / "cache" / host / path
diff --git a/tools/bus_data_gen.py b/tools/bus_data_gen.py
index f8f9e95aabb..8debaedb5cb 100644
--- a/tools/bus_data_gen.py
+++ b/tools/bus_data_gen.py
@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import Optional
+
 import jsonpickle
 
 
@@ -34,14 +34,14 @@ def __init__(self, id: int, campuses: list[Campus]):
 
 
 class RouteSchedule:
-    def __init__(self, id: int, route: Route, time: list[list[Optional[str]]]):
+    def __init__(self, id: int, route: Route, time: list[list[str | None]]):
         self.id = id
         self.route = route
         self.time = time
 
     id: int
     route: Route
-    time: list[list[Optional[str]]]
+    time: list[list[str | None]]
 
 
 class RouteScheduleP:
@@ -311,7 +311,7 @@ def __init__(
 )
 
 
-def generate_bus_data(output_path: Optional[Path] = None) -> Path:
+def generate_bus_data(output_path: Path | None = None) -> Path:
     data_json = jsonpickle.encode(data, unpicklable=False)
     if output_path is None:
         output_path = (
diff --git a/uv.lock b/uv.lock
index 0b37cb5cca2..3f9b077425a 100644
--- a/uv.lock
+++ b/uv.lock
@@ -408,6 +408,8 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/ee/43/3cecdc0349359e1a527cbf2e3e28e5f8f06d3343aaf82ca13437a9aa290f/greenlet-3.2.4-cp313-cp313-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:23768528f2911bcd7e475210822ffb5254ed10d71f4028387e5a99b4c6699671", size = 610497, upload-time = "2025-08-07T13:18:31.636Z" },
     { url = "https://files.pythonhosted.org/packages/b8/19/06b6cf5d604e2c382a6f31cafafd6f33d5dea706f4db7bdab184bad2b21d/greenlet-3.2.4-cp313-cp313-musllinux_1_1_aarch64.whl", hash = "sha256:00fadb3fedccc447f517ee0d3fd8fe49eae949e1cd0f6a611818f4f6fb7dc83b", size = 1121662, upload-time = "2025-08-07T13:42:41.117Z" },
     { url = "https://files.pythonhosted.org/packages/a2/15/0d5e4e1a66fab130d98168fe984c509249c833c1a3c16806b90f253ce7b9/greenlet-3.2.4-cp313-cp313-musllinux_1_1_x86_64.whl", hash = "sha256:d25c5091190f2dc0eaa3f950252122edbbadbb682aa7b1ef2f8af0f8c0afefae", size = 1149210, upload-time = "2025-08-07T13:18:24.072Z" },
+    { url = "https://files.pythonhosted.org/packages/1c/53/f9c440463b3057485b8594d7a638bed53ba531165ef0ca0e6c364b5cc807/greenlet-3.2.4-cp313-cp313-musllinux_1_2_aarch64.whl", hash = "sha256:6e343822feb58ac4d0a1211bd9399de2b3a04963ddeec21530fc426cc121f19b", size = 1564759, upload-time = "2025-11-04T12:42:19.395Z" },
+    { url = "https://files.pythonhosted.org/packages/47/e4/3bb4240abdd0a8d23f4f88adec746a3099f0d86bfedb623f063b2e3b4df0/greenlet-3.2.4-cp313-cp313-musllinux_1_2_x86_64.whl", hash = "sha256:ca7f6f1f2649b89ce02f6f229d7c19f680a6238af656f61e0115b24857917929", size = 1634288, upload-time = "2025-11-04T12:42:21.174Z" },
     { url = "https://files.pythonhosted.org/packages/0b/55/2321e43595e6801e105fcfdee02b34c0f996eb71e6ddffca6b10b7e1d771/greenlet-3.2.4-cp313-cp313-win_amd64.whl", hash = "sha256:554b03b6e73aaabec3745364d6239e9e012d64c68ccd0b8430c64ccc14939a8b", size = 299685, upload-time = "2025-08-07T13:24:38.824Z" },
     { url = "https://files.pythonhosted.org/packages/22/5c/85273fd7cc388285632b0498dbbab97596e04b154933dfe0f3e68156c68c/greenlet-3.2.4-cp314-cp314-macosx_11_0_universal2.whl", hash = "sha256:49a30d5fda2507ae77be16479bdb62a660fa51b1eb4928b524975b3bde77b3c0", size = 273586, upload-time = "2025-08-07T13:16:08.004Z" },
     { url = "https://files.pythonhosted.org/packages/d1/75/10aeeaa3da9332c2e761e4c50d4c3556c21113ee3f0afa2cf5769946f7a3/greenlet-3.2.4-cp314-cp314-manylinux2014_aarch64.manylinux_2_17_aarch64.whl", hash = "sha256:299fd615cd8fc86267b47597123e3f43ad79c9d8a22bebdce535e53550763e2f", size = 686346, upload-time = "2025-08-07T13:42:59.944Z" },
@@ -415,6 +417,8 @@ wheels = [
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     { url = "https://files.pythonhosted.org/packages/92/2e/ea25914b1ebfde93b6fc4ff46d6864564fba59024e928bdc7de475affc25/greenlet-3.2.4-cp314-cp314-manylinux2014_x86_64.manylinux_2_17_x86_64.whl", hash = "sha256:061dc4cf2c34852b052a8620d40f36324554bc192be474b9e9770e8c042fd735", size = 695355, upload-time = "2025-08-07T13:18:34.517Z" },
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+    { url = "https://files.pythonhosted.org/packages/23/6e/74407aed965a4ab6ddd93a7ded3180b730d281c77b765788419484cdfeef/greenlet-3.2.4-cp314-cp314-musllinux_1_2_aarch64.whl", hash = "sha256:2917bdf657f5859fbf3386b12d68ede4cf1f04c90c3a6bc1f013dd68a22e2269", size = 1612508, upload-time = "2025-11-04T12:42:23.427Z" },
+    { url = "https://files.pythonhosted.org/packages/0d/da/343cd760ab2f92bac1845ca07ee3faea9fe52bee65f7bcb19f16ad7de08b/greenlet-3.2.4-cp314-cp314-musllinux_1_2_x86_64.whl", hash = "sha256:015d48959d4add5d6c9f6c5210ee3803a830dce46356e3bc326d6776bde54681", size = 1680760, upload-time = "2025-11-04T12:42:25.341Z" },
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 ]
 
@@ -1632,6 +1636,32 @@ wheels = [
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 ]
 
+[[package]]
+name = "ruff"
+version = "0.14.14"
+source = { registry = "https://pypi.org/simple" }
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