diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 19b56684c..8f019e113 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -32,7 +32,8 @@ jobs:
         with:
           coverage: "none"
           php-version: "${{ matrix.php-version }}"
-          ini-values: memory_limit=-1
+          # No deprecated errors
+          ini-values: memory_limit=-1, error_reporting=24575
 
       - name: "Cache dependencies"
         uses: "actions/cache@v2"