diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 28c7876..ae35c64 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -1,6 +1,10 @@
 name: Build
 
-on: push
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
 
 jobs:
   build:
@@ -9,11 +13,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [7.2, 7.3, 7.4]
-        coverage: ["true"]
+        php: [8.0, 8.1, 8.2, 8.3]
+        coverage: ["false"]
         include:
-        - php: 8.0
-          coverage: "false" # PHPUnit 8.5.14 doesn't support code coverage under PHP 8
+        - php: 8.3
+          coverage: "true" # Collecting coverage reports only once
 
     steps:
     - name: Checkout
diff --git a/composer.json b/composer.json
index 1ef2582..3f5d041 100644
--- a/composer.json
+++ b/composer.json
@@ -5,13 +5,17 @@
     "license": "GPL-2.0-only",
     "require": {
         "ext-json": "*",
-        "php": ">=7.2.0",
-        "oat-sa/lib-lti1p3-core": "^6.3"
+        "php": ">=8.0.0",
+        "oat-sa/lib-lti1p3-core": "^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.5.14",
+        "lcobucci/jwt": "^4.3",
+        "nesbot/carbon": "^2.72",
+        "nyholm/psr7": "^1.8",
         "php-coveralls/php-coveralls": "^2.4",
-        "psalm/plugin-phpunit": "^0.15.1",
+        "phpunit/phpunit": "^9.6",
+        "psalm/plugin-phpunit": "^0.15",
+        "psr/http-message": "^1.1",
         "vimeo/psalm": "^4.6"
     },
     "autoload": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 081c3ef..9c207e8 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,25 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <!-- https://phpunit.de/manual/current/en/appendixes.configuration.html -->
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/8.5/phpunit.xsd"
-         backupGlobals="false"
-         colors="true"
->
-
-    <php>
-        <env name="TEST_KEYS_ROOT_DIR" value="file://vendor/oat-sa/lib-lti1p3-core/tests/Resource/Key/RSA" />
-    </php>
-
-    <testsuites>
-        <testsuite name="Unit">
-            <directory>tests/Unit</directory>
-        </testsuite>
-    </testsuites>
-
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory>src</directory>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd" backupGlobals="false" colors="true">
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory>src</directory>
+    </include>
+  </coverage>
+  <php>
+    <env name="TEST_KEYS_ROOT_DIR" value="file://vendor/oat-sa/lib-lti1p3-core/tests/Resource/Key/RSA"/>
+  </php>
+  <testsuites>
+    <testsuite name="Unit">
+      <directory>tests/Unit</directory>
+    </testsuite>
+  </testsuites>
 </phpunit>