diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 672771ad18b..1d1a863f27f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,6 +12,45 @@ env:
   COMPOSER_ROOT_VERSION: "0.12.x-dev"
 
 jobs:
+  lint:
+    name: "lint"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.1"
+          - "7.2"
+          - "7.3"
+          - "7.4"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2.0.0"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@1.8.2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Validate Composer"
+        run: "composer validate"
+
+      - name: "Cache dependencies"
+        uses: "actions/cache@v1.1.2"
+        with:
+          path: "~/.composer/cache"
+          key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('**/composer.json') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-"
+
+      - name: "Install dependencies"
+        run: "composer update --no-interaction --no-progress --no-suggest"
+
+      - name: "Lint"
+        run: "vendor/bin/phing lint"
+
   coding-standards:
     name: "Coding Standard"
 
diff --git a/tests/PHPStan/Rules/Variables/data/isset-native-property-types.php b/tests/PHPStan/Rules/Variables/data/isset-native-property-types.php
index 1d93d3f647b..f493c1fac6e 100644
--- a/tests/PHPStan/Rules/Variables/data/isset-native-property-types.php
+++ b/tests/PHPStan/Rules/Variables/data/isset-native-property-types.php
@@ -1,4 +1,4 @@
-<?php
+<?php // lint >= 7.4
 
 namespace IssetNativePropertyTypes;
 
diff --git a/tests/PHPStan/Rules/Variables/data/variable-certainty-null-assign.php b/tests/PHPStan/Rules/Variables/data/variable-certainty-null-assign.php
index d0d2b7c9274..8500b140634 100644
--- a/tests/PHPStan/Rules/Variables/data/variable-certainty-null-assign.php
+++ b/tests/PHPStan/Rules/Variables/data/variable-certainty-null-assign.php
@@ -1,4 +1,4 @@
-<?php
+<?php // lint >= 7.4
 
 function (): void {
 	$scalar = 3;