diff --git a/.travis.yml b/.travis.yml
index 2d67611..dda43a4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,12 +6,23 @@ env:
   global:
     - ROLE_NAME: php-versions
   matrix:
-    # Default PHP version.
+    # Default PHP version (7.1).
     - MOLECULE_DISTRO: centos7
     - MOLECULE_DISTRO: ubuntu1804
     - MOLECULE_DISTRO: ubuntu1604
     - MOLECULE_DISTRO: debian9
 
+    # PHP 7.3.
+    - MOLECULE_DISTRO: centos7
+      MOLECULE_DOCKER_COMMAND: /usr/lib/systemd/systemd
+      MOLECULE_PLAYBOOK: playbook-7.3.yml
+    - MOLECULE_DISTRO: ubuntu1804
+      MOLECULE_PLAYBOOK: playbook-7.3.yml
+    - MOLECULE_DISTRO: ubuntu1604
+      MOLECULE_PLAYBOOK: playbook-7.3.yml
+    - MOLECULE_DISTRO: debian9
+      MOLECULE_PLAYBOOK: playbook-7.3.yml
+
     # PHP 7.2.
     - MOLECULE_DISTRO: centos7
       MOLECULE_PLAYBOOK: playbook-7.2.yml
diff --git a/molecule/default/playbook-7.3.yml b/molecule/default/playbook-7.3.yml
new file mode 100644
index 0000000..b16c47f
--- /dev/null
+++ b/molecule/default/playbook-7.3.yml
@@ -0,0 +1,24 @@
+---
+- name: Converge
+  hosts: all
+  become: true
+
+  vars:
+    php_enable_webserver: false
+    php_version: '7.3'
+
+  pre_tasks:
+    - name: Update apt cache.
+      apt: update_cache=true cache_valid_time=600
+      when: ansible_os_family == 'Debian'
+
+  roles:
+    - role: geerlingguy.repo-remi
+      when: ansible_os_family == 'RedHat'
+    - role: geerlingguy.php-versions
+    - role: geerlingguy.php
+
+  post_tasks:
+    - name: Confirm PHP version is correct.
+      shell: "php -v | grep -F '{{ php_version }}'"
+      changed_when: false
diff --git a/tasks/setup-RedHat.yml b/tasks/setup-RedHat.yml
index 7af8bf9..a0b094b 100644
--- a/tasks/setup-RedHat.yml
+++ b/tasks/setup-RedHat.yml
@@ -14,3 +14,7 @@
 - name: Enable remi repo for PHP 7.2.
   set_fact: php_enablerepo="remi,remi-php72"
   when: php_version == "7.2"
+
+- name: Enable remi repo for PHP 7.3.
+  set_fact: php_enablerepo="remi,remi-php73"
+  when: php_version == "7.3"