diff --git a/.github/workflows/mysql_hardening.yml b/.github/workflows/mysql_hardening.yml
index 3799d5f3a..94902283e 100644
--- a/.github/workflows/mysql_hardening.yml
+++ b/.github/workflows/mysql_hardening.yml
@@ -28,6 +28,7 @@ jobs:
           - ubuntu2004
           - debian9
           - debian10
+          - debian11
           # - amazon  # geerlingguy.mysql does not support fedora
           # - arch  # needs to be fixed
           # - opensuse_tumbleweed  # needs to be fixed
diff --git a/.github/workflows/nginx_hardening.yml b/.github/workflows/nginx_hardening.yml
index d317b1bf4..1660e8032 100644
--- a/.github/workflows/nginx_hardening.yml
+++ b/.github/workflows/nginx_hardening.yml
@@ -28,6 +28,7 @@ jobs:
           - ubuntu2004
           - debian9
           - debian10
+          - debian11
           - amazon
           # - arch  # needs to be fixed
           # - opensuse_tumbleweed  # needs to be fixed
diff --git a/.github/workflows/os_hardening.yml b/.github/workflows/os_hardening.yml
index d8aa0c394..5b7e3b0af 100644
--- a/.github/workflows/os_hardening.yml
+++ b/.github/workflows/os_hardening.yml
@@ -28,6 +28,7 @@ jobs:
           - ubuntu2004
           - debian9
           - debian10
+          - debian11
           - amazon
           - opensuse_tumbleweed
           # - arch  # needs to be fixed
diff --git a/.github/workflows/ssh_hardening.yml b/.github/workflows/ssh_hardening.yml
index 2958d6359..9d819081b 100644
--- a/.github/workflows/ssh_hardening.yml
+++ b/.github/workflows/ssh_hardening.yml
@@ -29,6 +29,7 @@ jobs:
           - ubuntu2004
           - debian9
           - debian10
+          - debian11
           - amazon
           # - arch  # needs to be fixed
           # - opensuse_tumbleweed  # baseline is not compatible with suse
diff --git a/.github/workflows/ssh_hardening_custom_tests.yml b/.github/workflows/ssh_hardening_custom_tests.yml
index bf0a24fa3..bb769456d 100644
--- a/.github/workflows/ssh_hardening_custom_tests.yml
+++ b/.github/workflows/ssh_hardening_custom_tests.yml
@@ -29,6 +29,7 @@ jobs:
           - ubuntu2004
           - debian9
           - debian10
+          - debian11
           - amazon
           # - arch  # needs to be fixed
           # - opensuse_tumbleweed  # baseline is not compatible with suse