diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 31d0ed11..38080af1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -41,4 +41,4 @@ jobs:
             - name: Install dependencies
               run: composer update $DEFAULT_COMPOSER_FLAGS
             - name: Run unit tests
-              run: vendor/bin/phpunit --verbose --colors=always tests
+              run: vendor/bin/phpunit --colors=always tests
diff --git a/composer.json b/composer.json
index 3cd6fc38..64825884 100644
--- a/composer.json
+++ b/composer.json
@@ -9,8 +9,9 @@
         "phpseclib/phpseclib": "^3.0.7"
     },
     "require-dev": {
+        "phpunit/phpunit": "<10",
         "roave/security-advisories": "dev-latest",
-        "yoast/phpunit-polyfills": "^1.0"
+        "yoast/phpunit-polyfills": "^2.0"
     },
     "archive" : {
         "exclude" : [