diff --git a/config/etc/apt/sources.list.d/debian-security.list b/config/etc/apt/sources.list.d/debian-security.list
index eaf168c..5accdf2 100644
--- a/config/etc/apt/sources.list.d/debian-security.list
+++ b/config/etc/apt/sources.list.d/debian-security.list
@@ -1 +1 @@
-deb https://deb.debian.org/debian-security buster/updates main contrib non-free
\ No newline at end of file
+deb https://deb.debian.org/debian-security bullseye/updates main contrib non-free
diff --git a/config/etc/apt/sources.list.d/debian.list b/config/etc/apt/sources.list.d/debian.list
index 51e438c..35b130e 100644
--- a/config/etc/apt/sources.list.d/debian.list
+++ b/config/etc/apt/sources.list.d/debian.list
@@ -1 +1 @@
-deb https://deb.debian.org/debian buster main contrib non-free
\ No newline at end of file
+deb https://deb.debian.org/debian bullseye main contrib non-free
diff --git a/config/etc/apt/sources.list.d/docker.list b/config/etc/apt/sources.list.d/docker.list
index 552bcfd..64760e4 100644
--- a/config/etc/apt/sources.list.d/docker.list
+++ b/config/etc/apt/sources.list.d/docker.list
@@ -1 +1 @@
-deb [signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian buster stable
\ No newline at end of file
+deb [signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian bullseye stable
diff --git a/setup.sh b/setup.sh
index 9055cfd..a218543 100755
--- a/setup.sh
+++ b/setup.sh
@@ -42,7 +42,7 @@ mount "$esp" "$chroot/boot/efi"
 
 # debootstrap
 
-debootstrap --variant=minbase --arch=amd64 buster "$chroot" https://deb.debian.org/debian/
+debootstrap --variant=minbase --arch=amd64 bullseye "$chroot" https://deb.debian.org/debian/
 
 mount -t proc none "$chroot/proc"
 mount -t sysfs none "$chroot/sys"