diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f3149de..24342f4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,6 +58,10 @@ jobs:
       if: matrix.php-version == '7.4'
       uses: mheap/phpunit-matcher-action@master
 
+    - name: Setup problem matchers for PHPUnit
+      if: matrix.php-version == '7.4'
+      run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
+
     - name: Run PHPUnit
       run: |
         vendor/bin/phpcs --config-set installed_paths $(pwd)