diff --git a/.ansible-lint b/.ansible-lint
index 4778564..cb73159 100644
--- a/.ansible-lint
+++ b/.ansible-lint
@@ -1,2 +1,3 @@
 skip_list:
   - '306'
+  - '405'
diff --git a/.travis.yml b/.travis.yml
index e408915..1bb8486 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ env:
     - MOLECULE_DISTRO: centos7
     - MOLECULE_DISTRO: ubuntu1804
     - MOLECULE_DISTRO: debian9
+    - MOLECULE_DISTRO: debian10
 
 install:
   # Install test dependencies.
diff --git a/README.md b/README.md
index c878573..2537ea7 100644
--- a/README.md
+++ b/README.md
@@ -85,7 +85,7 @@ None.
 - hosts: all
 
   vars:
-    kubernetes_allow_pods_on_master: True
+    kubernetes_allow_pods_on_master: true
 
   roles:
     - geerlingguy.docker
@@ -112,7 +112,7 @@ Playbook:
 - hosts: all
 
   vars:
-    kubernetes_allow_pods_on_master: True
+    kubernetes_allow_pods_on_master: true
 
   roles:
     - geerlingguy.docker
diff --git a/meta/main.yml b/meta/main.yml
index 992eac3..d216375 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -11,9 +11,11 @@ galaxy_info:
     - name: EL
       versions:
         - 7
+        - 8
     - name: Debian
       versions:
         - stretch
+        - buster
     - name: Ubuntu
       versions:
         - xenial
diff --git a/tasks/master-setup.yml b/tasks/master-setup.yml
index c6631c7..306acda 100644
--- a/tasks/master-setup.yml
+++ b/tasks/master-setup.yml
@@ -42,7 +42,7 @@
 - name: Allow pods on master node (if configured).
   command: "kubectl taint nodes --all node-role.kubernetes.io/master-"
   when:
-    - kubernetes_allow_pods_on_master
+    - kubernetes_allow_pods_on_master | bool
     - not kubernetes_init_stat.stat.exists
 
 - name: Check if Kubernetes Dashboard UI service already exists.
@@ -50,10 +50,10 @@
   changed_when: false
   failed_when: false
   register: kubernetes_dashboard_service
-  when: kubernetes_enable_web_ui
+  when: kubernetes_enable_web_ui | bool
 
 - name: Enable the Kubernetes Web Dashboard UI (if configured).
   command: "kubectl create -f {{ kubernetes_web_ui_manifest_file }}"
   when:
-    - kubernetes_enable_web_ui
+    - kubernetes_enable_web_ui | bool
     - kubernetes_dashboard_service is failed