diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0b83fff..c5f4c48 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,7 @@ jobs:
         php-version: ${{ matrix.php-version }}
         tools: composer
         coverage: xdebug
+        ini-values: error_reporting=E_ALL
 
     - uses: ramsey/composer-install@v1
 
diff --git a/phpunit.xml b/phpunit.xml
index b2ff004..d7f9c74 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -2,6 +2,7 @@
 <phpunit backupGlobals="false"
          backupStaticAttributes="false"
          colors="true"
+         convertDeprecationsToExceptions="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"