diff --git a/main.py b/main.py
index cd9cfcc..6739686 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,4 @@
-from thu_learn_downloader.__main__ import run
+from thu_learn_downloader.__main__ import app
 
 if __name__ == "__main__":
-    run()
+    app()
diff --git a/poetry.lock b/poetry.lock
index 25a13c3..00610a2 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.4.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.4.0 and should not be changed by hand.
 
 [[package]]
 name = "altgraph"
@@ -314,19 +314,19 @@
 
 [[package]]
 name = "platformdirs"
-version = "3.1.1"
+version = "3.2.0"
 description = "A small Python package for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "platformdirs-3.1.1-py3-none-any.whl", hash = "sha256:e5986afb596e4bb5bde29a79ac9061aa955b94fca2399b7aaac4090860920dd8"},
-    {file = "platformdirs-3.1.1.tar.gz", hash = "sha256:024996549ee88ec1a9aa99ff7f8fc819bb59e2c3477b410d90a16d32d6e707aa"},
+    {file = "platformdirs-3.2.0-py3-none-any.whl", hash = "sha256:ebe11c0d7a805086e99506aa331612429a72ca7cd52a1f0d277dc4adc20cb10e"},
+    {file = "platformdirs-3.2.0.tar.gz", hash = "sha256:d5b638ca397f25f979350ff789db335903d7ea010ab28903f57b27e1b16c2b08"},
 ]
 
 [package.extras]
 docs = ["furo (>=2022.12.7)", "proselint (>=0.13)", "sphinx (>=6.1.3)", "sphinx-autodoc-typehints (>=1.22,!=1.23.4)"]
-test = ["appdirs (==1.4.4)", "covdefaults (>=2.2.2)", "pytest (>=7.2.1)", "pytest-cov (>=4)", "pytest-mock (>=3.10)"]
+test = ["appdirs (==1.4.4)", "covdefaults (>=2.3)", "pytest (>=7.2.2)", "pytest-cov (>=4)", "pytest-mock (>=3.10)"]
 
 [[package]]
 name = "pygments"
diff --git a/pyproject.toml b/pyproject.toml
index 77a7bde..d196728 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,5 +28,5 @@
 pyinstaller = "^5.8.0"
 
 [tool.poetry.scripts]
-thu-learn-downloader = "thu_learn_downloader.__main__:run"
-tld = "thu_learn_downloader.__main__:run"
+thu-learn-downloader = "thu_learn_downloader.__main__:app"
+tld = "thu_learn_downloader.__main__:app"
diff --git a/thu_learn_downloader/__main__.py b/thu_learn_downloader/__main__.py
index 1c2ceef..fe9fd1e 100644
--- a/thu_learn_downloader/__main__.py
+++ b/thu_learn_downloader/__main__.py
@@ -19,7 +19,10 @@
 from .downloader import Downloader
 from .helper import Helper
 
+app = typer.Typer(name="tld")
 
+
+@app.command(name="tld")
 def main(
     username: str = typer.Option("liqin20", "-u", "--username"),
     password: str = typer.Option(
@@ -79,9 +82,5 @@
                 )
 
 
-def run() -> None:
-    typer.run(main)
-
-
 if __name__ == "__main__":
-    run()
+    app()