diff --git a/.travis.yml b/.travis.yml
index ac01b60..2cd85d1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,14 +14,14 @@ env:
 matrix:
   include:
     - php: 5.6
-      env: DB=MYSQL RECIPE_VERSION=4.2.x-dev PHPCS_TEST=1 PHPUNIT_TEST=1
+      env: DB=MYSQL RECIPE_VERSION=~4.2.0 PHPCS_TEST=1 PHPUNIT_TEST=1
     - php: 7.0
-      env: DB=PGSQL RECIPE_VERSION=4.2.x-dev PHPUNIT_TEST=1
+      env: DB=PGSQL RECIPE_VERSION=~4.2.0 PHPUNIT_TEST=1
     - php: 7.1
-      env: DB=MYSQL RECIPE_VERSION=4.2.x-dev PHPUNIT_COVERAGE_TEST=1
+      env: DB=MYSQL RECIPE_VERSION=~4.2.0 PHPUNIT_COVERAGE_TEST=1
     - php: 7.1
-      env: DB=MYSQL RECIPE_VERSION=4.2.x-dev BEHAT_TEST=1
-    - php: 7.2
+      env: DB=MYSQL RECIPE_VERSION=~4.2.0 BEHAT_TEST=1
+    - php: 7.4
       env: DB=MYSQL RECIPE_VERSION=4.x-dev PHPUNIT_TEST=1
 
 before_script:
diff --git a/composer.json b/composer.json
index 9830947..28ebb80 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,8 @@
         "silverstripe/siteconfig": "^4.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7",
+        "sminnee/phpunit": "^5.7.29",
+        "sminnee/phpunit-mock-objects": "^3.4.9",
         "squizlabs/php_codesniffer": "^3",
         "silverstripe/behat-extension": "^3",
         "silverstripe/serve": "^2",