diff --git a/requirements.txt b/requirements.txt
index 3d78939..6381519 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ multidict==6.0.4; python_version >= '3.6'
 niconico-dl==2.2.8
 pycparser==2.21; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pynacl==1.5.0
-python-dotenv==0.21.0
+python-dotenv==1.0.0
 requests==2.28.1
 soupsieve==2.3.2.post1; python_version >= '3.6'
 typing-extensions==4.4.0; python_version >= '3.6'