diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c1606df..1e721c7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,12 +9,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.4']
+        php: ['7.2']
         stability: [ prefer-stable ]
         experimental: [false]
         include:
-          - php: '7.4'
+          - php: '7.2'
             stability: prefer-lowest
+          - php: '7.3'
+          - php: '7.4'
           - php: '8.0'
           - php: '8.1'
           - php: '8.2'
diff --git a/composer.json b/composer.json
index 925b9c8..dfca5dd 100644
--- a/composer.json
+++ b/composer.json
@@ -27,11 +27,11 @@
     },
 
     "require": {
-        "php": ">=7.4"
+        "php": ">=7.2"
     },
 
     "require-dev": {
-        "phpunit/phpunit":           "^9.5",
+        "phpunit/phpunit":           "^8.5",
         "squizlabs/php_codesniffer": "^3.7"
     },