diff --git a/.gitattributes b/.gitattributes
index aa15baa..fb6bdaf 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,2 @@
 /.* export-ignore
+/*.md export-ignore
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..17aef88
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,2 @@
+github: mlocati
+custom: https://paypal.me/mlocati
diff --git a/.github/workflows/create-release-attachment.yml b/.github/workflows/create-release-attachment.yml
index 5ead2ef..2a1e9cf 100644
--- a/.github/workflows/create-release-attachment.yml
+++ b/.github/workflows/create-release-attachment.yml
@@ -9,20 +9,24 @@ jobs:
   attach-zip:
     name: Attach ZIP to release
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
-      - name: Setup PHP
+      -
+        name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '5.5'
-          tools: composer:v1
+          php-version: '8.4'
+          tools: composer:v2.2
           coverage: none
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Create and attach ZIP
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Create and attach ZIP
         uses: concrete5-community/gh-package-release-attach@main
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           remove-files: |
             composer.json
-            composer.lock
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..72deb53
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,98 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - main
+    tags-ignore:
+      - '**'
+  pull_request:
+    branches:
+      - main
+
+jobs:
+
+  check-php-syntax:
+    name: PHP ${{ matrix.php-version }} Syntax
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-version:
+          - "5.5"
+          - "8.4"
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: opcache
+          coverage: none
+          tools: none
+      -
+        name: Check syntax
+        uses: mlocati/check-php-syntax@v1
+        with:
+          fail-on-warnings: true
+
+  check-development-leftovers:
+    name: Check Development Leftovers
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Search for debugger or xdebug_break
+        run: |
+          echo "Scanning for 'debugger' or 'xdebug_break'..."
+          matches=$(grep -Enr --include=\*.{js,php} '(^|[^a-zA-Z0-9_])(debugger|xdebug_break)\b' . || true)
+          if [[ -n "$matches" ]]; then
+            echo "Found the following matches:"
+            echo "$matches"
+            echo "::error::Development leftovers found in the codebase."
+            exit 1
+          else
+            echo "No development leftovers found."
+          fi
+
+  check-install:
+    name: Install on Concrete ${{ matrix.ccm-version }}
+    runs-on: ubuntu-latest
+    container: ghcr.io/concrete5-community/docker5:${{ matrix.ccm-version }}
+    needs:
+      - check-php-syntax
+      - check-development-leftovers
+    strategy:
+      matrix:
+        ccm-version:
+          - 8.5.12
+          - "8.5"
+          - "9.0"
+          - "9.1"
+          - "9.2"
+          - "9.3"
+          - "9.4"
+          - latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Check composer.json
+        run: sudo -u www-data composer --ansi --no-interaction validate --strict -- "$GITHUB_WORKSPACE/composer.json"
+      -
+        name: Prepare package
+        run: ln -s "$GITHUB_WORKSPACE" /app/packages/maxmind_geolocator
+      -
+        name: Start services
+        run: ccm-service start db
+      -
+        name: Core info
+        run: sudo -u www-data /app/concrete/bin/concrete5 --ansi --no-interaction c5:info
+      -
+        name: Install package
+        run: sudo -u www-data /app/concrete/bin/concrete5 --ansi --no-interaction c5:package:install maxmind_geolocator
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c049aaa
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+[![Tests](https://github.com/concrete5-community/maxmind_geolocator/actions/workflows/tests.yml/badge.svg)](https://github.com/concrete5-community/maxmind_geolocator/actions/workflows/tests.yml)