diff --git a/.github/workflows/monitor-php8.1.yml b/.github/workflows/monitor-php8.1.yml
index 53134af..932c507 100644
--- a/.github/workflows/monitor-php8.1.yml
+++ b/.github/workflows/monitor-php8.1.yml
@@ -16,6 +16,7 @@ jobs:
           - alpine3.13
           - alpine3.14
           - buster
+          - bullseye
     name: Check on ${{ matrix.distro }}
     runs-on: ubuntu-latest
     env:
diff --git a/.github/workflows/test-extensions.yml b/.github/workflows/test-extensions.yml
index e2c6c80..fe7a977 100644
--- a/.github/workflows/test-extensions.yml
+++ b/.github/workflows/test-extensions.yml
@@ -75,6 +75,7 @@ jobs:
           - jessie
           - stretch
           - buster
+          - bullseye
     name: Check on ${{ matrix.distro }}
     runs-on: ubuntu-latest
     env:
diff --git a/.github/workflows/test-recent-extensions.yml b/.github/workflows/test-recent-extensions.yml
index 84397de..6f0d2af 100644
--- a/.github/workflows/test-recent-extensions.yml
+++ b/.github/workflows/test-recent-extensions.yml
@@ -47,6 +47,7 @@ jobs:
           - jessie
           - stretch
           - buster
+          - bullseye
     name: Check on ${{ matrix.distro }}
     env:
       IPETEST_DOCKER_DISTRO: ${{ matrix.distro }}