diff --git a/.github/workflows/cron.yml b/.github/workflows/cron.yml
index b3108cb..632c24e 100644
--- a/.github/workflows/cron.yml
+++ b/.github/workflows/cron.yml
@@ -506,7 +506,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["ubuntu:20.04", "ubuntu:18.04", "debian:10", "debian:9"]
+        os_version: ["ubuntu:20.04", "ubuntu:18.04", "debian:bullseye", "debian:10", "debian:9"]
       fail-fast: false
     container:
       image: ${{ matrix.os_version }}
@@ -820,7 +820,9 @@ jobs:
           wget -t 3 -T 30 -nv -O vpnup.sh https://git.io/vpnupgrade-ubuntu
           sed -i '/swan_ver_latest=/s/^/#/' vpnup.sh
 
+          os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
           for ver in 3.32 4.1 4.2 4.3 4.4; do
+            [ "$ver" = "3.32" ] && [ "$os_ver" = "11" ] && continue
             sed -i "s/^SWAN_VER=.*/SWAN_VER=$ver/" vpnup.sh
           sh vpnup.sh <<ANSWERS
           y
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5440cd6..5b669ef 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -535,7 +535,7 @@ jobs:
     if: github.repository_owner == 'hwdsl2'
     strategy:
       matrix:
-        os_version: ["ubuntu:20.04", "ubuntu:18.04", "debian:10", "debian:9"]
+        os_version: ["ubuntu:20.04", "ubuntu:18.04", "debian:bullseye", "debian:10", "debian:9"]
       fail-fast: false
     container:
       image: ${{ matrix.os_version }}
@@ -849,7 +849,9 @@ jobs:
           wget -t 3 -T 30 -nv -O vpnup.sh https://git.io/vpnupgrade-ubuntu
           sed -i '/swan_ver_latest=/s/^/#/' vpnup.sh
 
+          os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
           for ver in 3.32 4.1 4.2 4.3 4.4; do
+            [ "$ver" = "3.32" ] && [ "$os_ver" = "11" ] && continue
             sed -i "s/^SWAN_VER=.*/SWAN_VER=$ver/" vpnup.sh
           sh vpnup.sh <<ANSWERS
           y