diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index a0d8e81..6984aab 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -19,6 +19,7 @@ jobs:
           echo "deb http://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free">>/etc/apt/sources.list
           echo "deb https://security.debian.org/debian-security bullseye-security main contrib non-free">>/etc/apt/sources.list
           cat /etc/apt/sources.list
+          rm -rf /etc/apt/sources.list.d/*
           echo "--- update source ---"
           apt-get update
       - name: Prepare Python