diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 13ab380..91a38c8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -60,7 +60,7 @@ jobs:
       - name: Downgrade src
         run: php bin/transform-source ${{ env.TARGET_PHP_VERSION_ID }}
 
-      - name: Setup PHP ${{ env.TARGET_PHP_VERSION }}
+      - name: Reinstall PHP for PHP ${{ env.TARGET_PHP_VERSION }}
         uses: shivammathur/setup-php@v2
         with:
             php-version: ${{ env.TARGET_PHP_VERSION }}
@@ -68,6 +68,14 @@ jobs:
         env:
             COMPOSER_TOKEN: ${{ secrets.RELEASE_TOKEN }}
 
+      - name: Re-install dependencies related to testing
+        run: |
+          composer remove --dev nexusphp/cs-config friendsofphp/php-cs-fixer codeigniter/coding-standard -W
+          composer update --ansi
+
+      - name: Run lint on src
+        run: vendor/bin/parallel-lint src --colors --show-deprecated
+
       - name: Get tag for downgraded release
         id: tag-downgraded
         run: echo "${{ format('DOWNGRADED_TAG={0}.{1}', github.ref_name, env.TARGET_PHP_VERSION_ID) }}" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/test-phpunit.yml b/.github/workflows/test-phpunit.yml
index e00a987..fc9a439 100644
--- a/.github/workflows/test-phpunit.yml
+++ b/.github/workflows/test-phpunit.yml
@@ -14,6 +14,10 @@ on:
       - '**.php'
       - 'phpunit.dist.xml'
 
+env:
+  TARGET_PHP_VERSION: '7.4'
+  TARGET_PHP_VERSION_ID: 70400
+
 jobs:
   extension-tests:
     name: PHPUnit Extension Tests [PHP ${{ matrix.php-version }}]
@@ -55,5 +59,24 @@ jobs:
       - name: Install dependencies
         run: composer update --ansi
 
+      - name: Downgrade src
+        run: php bin/transform-source ${{ env.TARGET_PHP_VERSION_ID }}
+
+      - name: Reinstall PHP for PHP ${{ env.TARGET_PHP_VERSION }}
+        uses: shivammathur/setup-php@v2
+        with:
+            php-version: ${{ env.TARGET_PHP_VERSION }}
+            coverage: none
+        env:
+            COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Re-install dependencies related to testing
+        run: |
+          composer remove --dev nexusphp/cs-config friendsofphp/php-cs-fixer codeigniter/coding-standard -W
+          composer update --ansi
+
+      - name: Run lint on src
+        run: vendor/bin/parallel-lint src --colors --show-deprecated
+
       - name: Run Extension Tests
         run: vendor/bin/phpunit --no-coverage
diff --git a/composer.json b/composer.json
index f96860f..ea3728e 100644
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,7 @@
         "codeigniter4/shield": "^1.0@beta",
         "friendsofphp/php-cs-fixer": "^3.20",
         "nexusphp/cs-config": "^3.12",
+        "php-parallel-lint/php-parallel-lint": "^1.3",
         "phpstan/extension-installer": "^1.3",
         "phpstan/phpstan-deprecation-rules": "^1.1",
         "phpstan/phpstan-phpunit": "^1.3",