diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 986cc3b5..ea482a68 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,18 +28,31 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - php: 7.4
+          - php: 8.0
             moodle-branch: master
             database: pgsql
-          - php: 7.4
+            # The following line is only needed if you're going to run php8 jobs and your
+            # plugin needs xmlrpc services.
+            extensions: xmlrpc-beta
+          - php: 8.0
             moodle-branch: master
             database: mariadb
-          - php: 7.4
+            # The following line is only needed if you're going to run php8 jobs and your
+            # plugin needs xmlrpc services.
+            extensions: xmlrpc-beta
+          - php: 8.0
             moodle-branch: MOODLE_311_STABLE
             database: pgsql
-          - php: 7.4
+            # The following line is only needed if you're going to run php8 jobs and your
+            # plugin needs xmlrpc services.
+            extensions: xmlrpc-beta
+          - php: 8.0
             moodle-branch: MOODLE_311_STABLE
             database: mariadb
+            # The following line is only needed if you're going to run php8 jobs and your
+            # plugin needs xmlrpc services.
+            extensions: xmlrpc-beta
+
           - php: 7.4
             moodle-branch: MOODLE_310_STABLE
             database: pgsql
@@ -88,6 +101,8 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
+          extensions: ${{ matrix.extensions }}
+          ini-values: max_input_vars=5000
           coverage: none
 
       - name: Initialise moodle-plugin-ci
diff --git a/.travis.yml b/.travis.yml
index bcaace64..6dc4de95 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,14 +16,15 @@ cache:
 
 jobs:
   include:
-    - php: 7.4
+    - php: 8.0
       env: MOODLE_BRANCH=master            DB=pgsql
-    - php: 7.4
+    - php: 8.0
       env: MOODLE_BRANCH=master            DB=mysqli
-    - php: 7.4
+    - php: 8.0
       env: MOODLE_BRANCH=MOODLE_311_STABLE DB=pgsql
-    - php: 7.4
+    - php: 8.0
       env: MOODLE_BRANCH=MOODLE_311_STABLE DB=mysqli
+
     - php: 7.4
       env: MOODLE_BRANCH=MOODLE_310_STABLE DB=pgsql
     - php: 7.4
@@ -60,6 +61,10 @@ jobs:
     # be executed with that PHP versions.
 
 before_install:
+  # The following line is only needed if you're going to run php8 jobs and your
+  # plugin needs xmlrpc services.
+  - if [[ ${TRAVIS_PHP_VERSION:0:1} -gt 7 ]]; then pecl install xmlrpc-beta; fi
+  - echo 'max_input_vars=5000' >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini
   - phpenv config-rm xdebug.ini
   - cd ../..
   - composer create-project -n --no-dev --prefer-dist moodlehq/moodle-plugin-ci ci ^3
@@ -74,17 +79,18 @@ before_install:
     fi
 
 install:
-  - moodle-plugin-ci install
+  # Quiet to avoid moodle-plugin-ci detecting some behat PHP warnings. Remove it once MDL-71622 is sorted out.
+  - moodle-plugin-ci install --quiet
 
 script:
   - moodle-plugin-ci phplint
   - moodle-plugin-ci phpcpd
   - moodle-plugin-ci phpmd
   - moodle-plugin-ci codechecker
+  - moodle-plugin-ci phpdoc
   - moodle-plugin-ci validate
   - moodle-plugin-ci savepoints
   - moodle-plugin-ci mustache
   - moodle-plugin-ci grunt
-  - moodle-plugin-ci phpdoc
   - moodle-plugin-ci phpunit
   - moodle-plugin-ci behat