diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9f13285af7d8e8fc5e1ff94e4e2fdb7ef6dba78b..b7aa989665f97138f6d37331efb5951203e6550b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -123,6 +123,7 @@ rubocop:
 ## Define the rest of the matrix based on Kitchen testing
 # Make sure the instances listed below match up with
 # the `platforms` defined in `kitchen.yml`
+# default-debian-11-tiamat-py3: {extends: '.test_instance'}
 # default-debian-10-tiamat-py3: {extends: '.test_instance'}
 # default-debian-9-tiamat-py3: {extends: '.test_instance'}
 # default-ubuntu-2004-tiamat-py3: {extends: '.test_instance'}
@@ -134,6 +135,7 @@ rubocop:
 # default-oraclelinux-7-tiamat-py3: {extends: '.test_instance'}
 # default-almalinux-8-tiamat-py3: {extends: '.test_instance'}
 # default-rockylinux-8-tiamat-py3: {extends: '.test_instance'}
+default-debian-11-master-py3: {extends: '.test_instance'}
 default-debian-10-master-py3: {extends: '.test_instance'}
 default-debian-9-master-py3: {extends: '.test_instance'}
 default-ubuntu-2004-master-py3: {extends: '.test_instance'}
@@ -153,6 +155,7 @@ default-amazonlinux-2-master-py3: {extends: '.test_instance'}
 # default-gentoo-stage3-systemd-master-py3: {extends: '.test_instance'}
 # default-almalinux-8-master-py3: {extends: '.test_instance'}
 # default-rockylinux-8-master-py3: {extends: '.test_instance'}
+# default-debian-11-3003-1-py3: {extends: '.test_instance'}
 # default-debian-10-3003-1-py3: {extends: '.test_instance'}
 # default-debian-9-3003-1-py3: {extends: '.test_instance'}
 # default-ubuntu-2004-3003-1-py3: {extends: '.test_instance'}
@@ -170,6 +173,7 @@ default-amazonlinux-2-master-py3: {extends: '.test_instance'}
 # default-arch-base-latest-3003-1-py3: {extends: '.test_instance'}
 # default-gentoo-stage3-latest-3003-1-py3: {extends: '.test_instance'}
 # default-gentoo-stage3-systemd-3003-1-py3: {extends: '.test_instance'}
+# default-debian-11-3002-6-py3: {extends: '.test_instance'}
 # default-debian-10-3002-6-py3: {extends: '.test_instance'}
 # default-debian-9-3002-6-py3: {extends: '.test_instance'}
 # default-ubuntu-2004-3002-6-py3: {extends: '.test_instance'}
diff --git a/.travis.yml b/.travis.yml
index 49ec25a842f1ee0b9dcc085a7bf1e4035a0dfc0f..d974f3fcc24de3c2ad92f9914ac1e4e65b83663b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -83,6 +83,7 @@ jobs:
     ## Define the rest of the matrix based on Kitchen testing
     # Make sure the instances listed below match up with
     # the `platforms` defined in `kitchen.yml`
+    # - env: INSTANCE=default-debian-11-tiamat-py3
     # - env: INSTANCE=default-debian-10-tiamat-py3
     # - env: INSTANCE=default-debian-9-tiamat-py3
     # - env: INSTANCE=default-ubuntu-2004-tiamat-py3
@@ -94,6 +95,7 @@ jobs:
     # - env: INSTANCE=default-oraclelinux-7-tiamat-py3
     # - env: INSTANCE=default-almalinux-8-tiamat-py3
     # - env: INSTANCE=default-rockylinux-8-tiamat-py3
+    - env: INSTANCE=default-debian-11-master-py3
     - env: INSTANCE=default-debian-10-master-py3
     - env: INSTANCE=default-debian-9-master-py3
     - env: INSTANCE=default-ubuntu-2004-master-py3
@@ -113,6 +115,7 @@ jobs:
     # - env: INSTANCE=default-gentoo-stage3-systemd-master-py3
     # - env: INSTANCE=default-almalinux-8-master-py3
     # - env: INSTANCE=default-rockylinux-8-master-py3
+    # - env: INSTANCE=default-debian-11-3003-1-py3
     # - env: INSTANCE=default-debian-10-3003-1-py3
     # - env: INSTANCE=default-debian-9-3003-1-py3
     # - env: INSTANCE=default-ubuntu-2004-3003-1-py3
@@ -130,6 +133,7 @@ jobs:
     # - env: INSTANCE=default-arch-base-latest-3003-1-py3
     # - env: INSTANCE=default-gentoo-stage3-latest-3003-1-py3
     # - env: INSTANCE=default-gentoo-stage3-systemd-3003-1-py3
+    # - env: INSTANCE=default-debian-11-3002-6-py3
     # - env: INSTANCE=default-debian-10-3002-6-py3
     # - env: INSTANCE=default-debian-9-3002-6-py3
     # - env: INSTANCE=default-ubuntu-2004-3002-6-py3
diff --git a/.yamllint b/.yamllint
index 72dc99f28b08ef68aa21493f06ea95dbf984714a..716baafd954fe6f38b95b67d22d5b5ae9102da15 100644
--- a/.yamllint
+++ b/.yamllint
@@ -5,13 +5,15 @@
 extends: 'default'
 
 # Files to ignore completely
-# 1. All YAML files under directory `.cache/`, introduced during the GitLab CI run
-# 2. All YAML files under directory `.git/`
-# 3. All YAML files under directory `node_modules/`, introduced during the Travis run
-# 4. Any SLS files under directory `test/`, which are actually state files
-# 5. Any YAML files under directory `.kitchen/`, introduced during local testing
-# 6. `kitchen.vagrant.yml`, which contains Embedded Ruby (ERB) template syntax
+# 1. All YAML files under directory `.bundle/`, introduced if gems are installed locally
+# 2. All YAML files under directory `.cache/`, introduced during the CI run
+# 3. All YAML files under directory `.git/`
+# 4. All YAML files under directory `node_modules/`, introduced during the CI run
+# 5. Any SLS files under directory `test/`, which are actually state files
+# 6. Any YAML files under directory `.kitchen/`, introduced during local testing
+# 7. `kitchen.vagrant.yml`, which contains Embedded Ruby (ERB) template syntax
 ignore: |
+  .bundle/
   .cache/
   .git/
   node_modules/
diff --git a/kitchen.yml b/kitchen.yml
index 4e994ba079fa0d2e63f134040a364312a271e240..576a1185743559e94bc500238cb77abdb576a20e 100644
--- a/kitchen.yml
+++ b/kitchen.yml
@@ -20,6 +20,10 @@ provisioner:
 
 platforms:
   ## SALT `tiamat`
+  - name: debian-11-tiamat-py3
+    driver:
+      image: saltimages/salt-tiamat-py3:debian-11
+      run_command: /lib/systemd/systemd
   - name: debian-10-tiamat-py3
     driver:
       image: saltimages/salt-tiamat-py3:debian-10
@@ -59,6 +63,10 @@ platforms:
       image: saltimages/salt-tiamat-py3:rockylinux-8
 
   ## SALT `master`
+  - name: debian-11-master-py3
+    driver:
+      image: saltimages/salt-master-py3:debian-11
+      run_command: /lib/systemd/systemd
   - name: debian-10-master-py3
     driver:
       image: saltimages/salt-master-py3:debian-10
@@ -143,6 +151,10 @@ platforms:
       image: saltimages/salt-master-py3:rockylinux-8
 
   ## SALT `3003.1`
+  - name: debian-11-3003-1-py3
+    driver:
+      image: saltimages/salt-3003.1-py3:debian-11
+      run_command: /lib/systemd/systemd
   - name: debian-10-3003-1-py3
     driver:
       image: saltimages/salt-3003.1-py3:debian-10
@@ -221,6 +233,10 @@ platforms:
       image: saltimages/salt-3003.1-py3:gentoo-stage3-systemd
 
   ## SALT `3002.6`
+  - name: debian-11-3002-6-py3
+    driver:
+      image: saltimages/salt-3002.6-py3:debian-11
+      run_command: /lib/systemd/systemd
   - name: debian-10-3002-6-py3
     driver:
       image: saltimages/salt-3002.6-py3:debian-10