diff --git a/.travis.yml b/.travis.yml
index 43e39db..6521269 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -90,6 +90,36 @@ env:
   - distribution: ubuntu
     version: xenial
     playbook: unit
+  - distribution: ubuntu
+    version: artful
+    playbook: basic
+  - distribution: ubuntu
+    version: artful
+    playbook: push
+  - distribution: ubuntu
+    version: artful
+    playbook: stable
+  - distribution: ubuntu
+    version: artful
+    playbook: template
+  - distribution: ubuntu
+    version: artful
+    playbook: unit
+  - distribution: ubuntu
+    version: bionic
+    playbook: basic
+  - distribution: ubuntu
+    version: bionic
+    playbook: push
+  - distribution: ubuntu
+    version: bionic
+    playbook: stable
+  - distribution: ubuntu
+    version: bionic
+    playbook: template
+  - distribution: ubuntu
+    version: bionic
+    playbook: unit
 before_install:
   - 'sudo docker pull ${distribution}:${version}'
   - 'sudo docker build --no-cache --rm --file=tests/dockerfiles/Dockerfile.${distribution}-${version} --tag=${distribution}-${version}:ansible tests'
diff --git a/defaults/main.yml b/defaults/main.yml
index 293fc01..93b0d37 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -28,7 +28,8 @@ nginx_repository:
 # Default is mainline.
 branch: mainline
 
-# Install NGINX Unit and NGINX Unit packages.
+# Install NGINX Unit and NGINX Unit modules.
+# Use a list of supported NGINX Unit modules.
 # Default is false.
 unit_enable: false
 unit_modules: null
diff --git a/tests/dockerfiles/Dockerfile.ubuntu-artful b/tests/dockerfiles/Dockerfile.ubuntu-artful
new file mode 100644
index 0000000..1be99b1
--- /dev/null
+++ b/tests/dockerfiles/Dockerfile.ubuntu-artful
@@ -0,0 +1,14 @@
+FROM ubuntu:artful
+
+RUN apt-get update && apt-get dist-upgrade -y && apt-get install -y software-properties-common && rm -rf /var/lib/apt/lists/*
+
+RUN apt-add-repository -y ppa:ansible/ansible && apt-get update && apt-get install -y \
+    git \
+    ansible \
+    apt-transport-https \
+    curl \
+ && rm -rf /var/lib/apt/lists/*
+
+RUN echo "[local]\nlocalhost ansible_connection=local" > /etc/ansible/hosts
+
+ENTRYPOINT ["/sbin/init"]