diff --git a/.github/workflows/basic-qa.yml b/.github/workflows/basic-qa.yml
index 9905d051ad..cd09e555a6 100644
--- a/.github/workflows/basic-qa.yml
+++ b/.github/workflows/basic-qa.yml
@@ -168,6 +168,8 @@ jobs:
           # Allow for PHP deprecation notices.
           ini-values: error_reporting = E_ALL & ~E_DEPRECATED
           coverage: none
+        env:
+          fail-fast: true
 
       - name: "Composer: set PHPCS dependencies for tests (dev)"
         if: ${{ matrix.dependencies == 'dev' }}
@@ -250,6 +252,8 @@ jobs:
           php-version: 'latest'
           coverage: none
           tools: phpstan:1.x
+        env:
+          fail-fast: true
 
       # Install dependencies and handle caching in one go.
       # Dependencies need to be installed to make sure the PHPCS and PHPUnit classes are recognized.
diff --git a/.github/workflows/quicktest.yml b/.github/workflows/quicktest.yml
index 922b604bb9..d43d33206f 100644
--- a/.github/workflows/quicktest.yml
+++ b/.github/workflows/quicktest.yml
@@ -42,6 +42,8 @@ jobs:
           # Unit tests don't need to fail on those for stable releases where those issues won't get fixed anymore.
           ini-values: error_reporting=-1, display_errors=On, display_startup_errors=On
           coverage:  ${{ github.ref_name == 'develop' && 'xdebug' || 'none' }}
+        env:
+          fail-fast: true
 
       - name: Enable creation of `composer.lock` file
         if: ${{ matrix.dependencies == 'lowest' }}
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index b883e601c0..5f3ba45a55 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -96,6 +96,8 @@ jobs:
           ini-values: ${{ steps.set_ini.outputs.PHP_INI }}
           coverage: ${{ matrix.coverage && 'xdebug' || 'none' }}
           tools: cs2pr
+        env:
+          fail-fast: true
 
       - name: "Composer: set PHPCS dependencies for tests (dev)"
         if: ${{ matrix.dependencies == 'dev' }}