diff --git a/requirements.txt b/requirements.txt
index ead52c7..42e49a8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,12 @@ Requests
 mysqlclient
 passlib
 mypy
+typing-extensions
+types-python-dateutil
+types-requests
+types-PyYAML
+types-Werkzeug
+types-Flask
 flake8
 typed-ast
 freezegun
diff --git a/setup.py b/setup.py
index c81f41d..c2798fd 100644
--- a/setup.py
+++ b/setup.py
@@ -168,7 +168,7 @@ class CleanExtCommand(Command):
     def run(self) -> None:
         print("Removing build directory...")
         shutil.rmtree(os.path.abspath("build/"), ignore_errors=True)
-        for dirname, subdirList, fileList in os.walk(os.path.abspath("bemani/")):
+        for dirname, subdirList, fileList in os.walk(os.path.abspath(".")):
             for filename in fileList:
                 if filename[-3:] == ".so":
                     fullname = os.path.join(dirname, filename)