diff --git a/.travis.yml b/.travis.yml
index 420255b..f8a3257 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,30 +11,28 @@ env:
 jobs:
   fast_finish: true
   include:
-    - php: 7.1
-      env:
-        - REQUIRE_INSTALLER="4.5.x-dev"
-        - PHPCS_TEST=1
-        - PHPUNIT_TEST=1
-        - PHPUNIT_SUITE="framework"
-    - php: 7.2
-      env:
-        - REQUIRE_INSTALLER="4.6.x-dev"
-        - PHPUNIT_COVERAGE_TEST=1
-        - PHPUNIT_SUITE="postgresql"
     - php: 7.3
       env:
-        - REQUIRE_INSTALLER="4.7.x-dev"
-        - PHPUNIT_TEST=1
+        - REQUIRE_INSTALLER="4.10.x-dev"
+        - PHPUNIT_COVERAGE_TEST=1
         - PHPUNIT_SUITE="framework"
+    - php: 7.4
+      env:
+        - REQUIRE_INSTALLER="4.11.x-dev"
+        - PHPUNIT_TEST=1
+        - PHPUNIT_SUITE="postgresql"
     - php: 7.4
       env:
         - REQUIRE_INSTALLER="4.x-dev"
         - PHPUNIT_TEST=1
-        - PHPUNIT_SUITE="postgresql"
+        - PHPUNIT_SUITE="framework"
     - php: 8.0
+      env:
+        - REQUIRE_INSTALLER="4.x-dev"
+        - PHPUNIT_TEST=1
+        - PHPUNIT_SUITE="postgresql"
+    - php: 8.1
       env:
         - REQUIRE_INSTALLER="4.x-dev"
         - PHPUNIT_TEST=1
         - PHPUNIT_SUITE="framework"
-        - COMPOSER_INSTALL_ARG=--ignore-platform-reqs
diff --git a/composer.json b/composer.json
index 27d47fc..e0df830 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "silverstripe/vendor-plugin": "^1.0"
     },
     "require-dev": {
-        "sminnee/phpunit": "^5.7",
+        "phpunit/phpunit": "^9.5",
         "squizlabs/php_codesniffer": "^3"
     },
     "autoload": {