diff --git a/.travis.yml b/.travis.yml
index c5647243..8de483ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,12 +20,12 @@ matrix:
       env: DB=MYSQL PHPUNIT_TEST=1
     - php: 7.3
       env: DB=MYSQL PHPUNIT_TEST=1
+    - php: 7.4
+      env: DB=MYSQL PHPUNIT_TEST=1
     - php: 7.1
       env: DB=MYSQL PHPUNIT_COVERAGE_TEST=1 PHPCS_TEST=1
     - php: 7.2
       env: DB=MYSQL PHPUNIT_TEST=1 PDO=1
-    - php: 7.3
-      env: DB=MYSQL PHPUNIT_TEST=1
     - php: 7.3
       env: DB=PGSQL PHPUNIT_TEST=1
 
diff --git a/composer.json b/composer.json
index e34c2cc3..2a96cda2 100644
--- a/composer.json
+++ b/composer.json
@@ -25,6 +25,7 @@
     },
     "require-dev": {
         "silverstripe/versioned": "^1@dev",
+        "sminnee/phpunit-mock-objects": "^3.4.5",
         "phpunit/phpunit": "^5.7"
     },
     "suggest": {