diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 1ece209..e7d4609 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -73,13 +73,8 @@ jobs:
           coverage: none
           tools: composer, phpunit
 
-      - name: Validate composer.json and composer.lock
-        run: composer validate
-
       - name: Install dependencies
-        run: |
-          composer update --no-interaction --prefer-dist
-          composer install --prefer-dist --no-progress
+        run: composer install --prefer-dist --no-progress
 
       - name: Install WordPress Test Suite
         env:
diff --git a/composer.json b/composer.json
index a28b648..3cb064f 100644
--- a/composer.json
+++ b/composer.json
@@ -16,8 +16,8 @@
             "role": "Developer"
         }
     ],
-    "requires": {
-        "php": ">=7.1"
+    "require": {
+        "php": ">=7.4"
     },
     "require-dev": {
         "szepeviktor/phpstan-wordpress": "^1",
@@ -28,7 +28,7 @@
         "dealerdirect/phpcodesniffer-composer-installer": "^1",
         "phpcompatibility/phpcompatibility-wp": "^2",
         "yoast/phpunit-polyfills": "^3",
-        "phpunit/phpunit": "^7.5 || ^8.5"
+        "phpunit/phpunit": "^5.7.21 || ^6.5 || ^7.5 || ^8.5"
     },
     "config": {
         "allow-plugins": {