diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 28c7876..0e13aba 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -9,10 +9,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [7.2, 7.3, 7.4]
+        php: [8.0, 8.1, 8.2, 8.3]
         coverage: ["true"]
         include:
-        - php: 8.0
+        - php: 8.3
           coverage: "false" # PHPUnit 8.5.14 doesn't support code coverage under PHP 8
 
     steps:
diff --git a/composer.json b/composer.json
index 1ef2582..f5005ab 100644
--- a/composer.json
+++ b/composer.json
@@ -5,13 +5,13 @@
     "license": "GPL-2.0-only",
     "require": {
         "ext-json": "*",
-        "php": ">=7.2.0",
+        "php": ">=8.0.0",
         "oat-sa/lib-lti1p3-core": "^6.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.5.14",
+        "phpunit/phpunit": "^9.6",
         "php-coveralls/php-coveralls": "^2.4",
-        "psalm/plugin-phpunit": "^0.15.1",
+        "psalm/plugin-phpunit": "^0.15",
         "vimeo/psalm": "^4.6"
     },
     "autoload": {