diff --git a/debian/etc/apt/sources/aliyun.sources b/debian/etc/apt/sources/aliyun.sources
deleted file mode 100644
index 2f187ea..0000000
--- a/debian/etc/apt/sources/aliyun.sources
+++ /dev/null
@@ -1,13 +0,0 @@
-Types: deb
-# http://snapshot.debian.org/archive/debian/20230703T000000Z
-URIs: http://mirrors.aliyun.com/debian
-Suites: bookworm bookworm-updates
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
-
-Types: deb
-# http://snapshot.debian.org/archive/debian-security/20230703T000000Z
-URIs: http://mirrors.aliyun.com/debian-security
-Suites: bookworm-security
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
\ No newline at end of file
diff --git a/debian/etc/apt/sources/default.sources b/debian/etc/apt/sources/default.sources
deleted file mode 100644
index 961921b..0000000
--- a/debian/etc/apt/sources/default.sources
+++ /dev/null
@@ -1,13 +0,0 @@
-Types: deb
-# http://snapshot.debian.org/archive/debian/20230703T000000Z
-URIs: http://deb.debian.org/debian
-Suites: bookworm bookworm-updates
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
-
-Types: deb
-# http://snapshot.debian.org/archive/debian-security/20230703T000000Z
-URIs: http://deb.debian.org/debian-security
-Suites: bookworm-security
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
diff --git a/debian/etc/apt/sources/ustc.sources b/debian/etc/apt/sources/ustc.sources
deleted file mode 100644
index baf9786..0000000
--- a/debian/etc/apt/sources/ustc.sources
+++ /dev/null
@@ -1,13 +0,0 @@
-Types: deb
-# http://snapshot.debian.org/archive/debian/20230703T000000Z
-URIs: http://mirrors.ustc.edu.cn/debian
-Suites: bookworm bookworm-updates
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
-
-Types: deb
-# http://snapshot.debian.org/archive/debian-security/20230703T000000Z
-URIs: http://mirrors.ustc.edu.cn/debian-security
-Suites: bookworm-security
-Components: main
-Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg
\ No newline at end of file