diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index f9794e5..38245a1 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -4,13 +4,13 @@ on: push
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
-        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
+        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -26,24 +26,25 @@ jobs:
           make
 
       - name: Test the extension (PHP 7)
-        if: matrix.php-versions != '8.0' and matrix.php-versions == '8.1'
+        if: matrix.php-versions <= '7.4'
         run: |
           cd extension/
           REPORT_EXIT_STATUS=1 NO_INTERACTION=1 TEST_PHP_EXECUTABLE=$(which php) $(which php) run-tests.php -d extension=$PWD/modules/meminfo.so
 
       - name: Test the extension (PHP 8)
-        if: matrix.php-versions == '8.0' or matrix.php-versions == '8.1'
+        if: matrix.php-versions >= '8.0'
         run: |
           cd extension/
           REPORT_EXIT_STATUS=1 NO_INTERACTION=1 make test
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: ext-tests-output
           path: 'extension/tests/*.out'
 
       - name: Test the analyzers
+        if: matrix.php-versions != '8.4'
         run: |
           cd analyzer
           composer install
diff --git a/README.md b/README.md
index 96a5dfb..076a61c 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ One of the main sources of inspiration for this tool is the Java jmap tool with
 
 Compatibility
 -------------
-PHP 7.x, 8.0.
+PHP 7.x, 8.x.
 
 For older versions of PHP, you can use the following releases:
  - 5.6: PHP Meminfo v1.1
diff --git a/extension/tests/bug-github-76_children_items_not_linked_php7.phpt b/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
index 676c7e6..cd02617 100644
--- a/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
+++ b/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
@@ -3,6 +3,7 @@ Check that all children items are properly linked through their identifiers
 --SKIPIF--
 <?php
     if (!extension_loaded('json')) die('skip json ext not loaded');
+    if (PHP_VERSION_ID >= 80200) die('skip PHP8.2+ deprecates dynamic property declaration');
 ?>
 --FILE--