diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
new file mode 100644
index 0000000..3b275d3
--- /dev/null
+++ b/.github/workflows/unittests.yml
@@ -0,0 +1,60 @@
+name: unittests
+
+on: [ push, pull_request ]
+
+jobs:
+  unittests:
+    name: '[PHP ${{ matrix.php-version }} | Flow ${{ matrix.flow-version }}] Unit Tests'
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: [ 8.1, 8.2, 8.3 ]
+        dbal-version: [ 2.13, 3.8 ]
+
+    env:
+      APP_ENV: true
+      TEST_DIR: test-dir
+
+    steps:
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: mbstring, xml, json, zlib, iconv, intl, pdo_sqlite
+          ini-values: opcache.fast_shutdown=0
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          path: ${{ env.TEST_DIR }}/dist/upsert
+
+      - name: "Create composer.json"
+        run: |
+          echo '{
+              "name": "netlogix/upsert-test",
+              "description": "",
+              "license": "GPL-3.0-or-later",
+              "require": {
+                  "netlogix/doctrine-upsert": "@dev",
+                  "doctrine/dbal": "^${{ matrix.dbal-version }}"
+              },
+              "require-dev": {
+                  "phpunit/phpunit": "^10.5"
+              },
+              "repositories": [
+                  {
+                      "type": "path",
+                      "url": "dist/upsert"
+                  }
+              ]
+          }' > composer.json
+        working-directory: ${{ env.TEST_DIR }}
+
+      - name: "Install project"
+        run: composer install
+        working-directory: ${{ env.TEST_DIR }}
+
+      - name: Run tests
+        run: vendor/bin/phpunit -c dist/upsert/phpunit.xml.dist --testsuite="Unit"
+        working-directory: ${{ env.TEST_DIR }}
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..b698162
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<phpunit
+    beStrictAboutChangesToGlobalState="true"
+    beStrictAboutOutputDuringTests="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    timeoutForSmallTests="0">
+    <testsuites>
+        <testsuite name="Unit">
+            <directory>./test/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory suffix=".php">./Classes</directory>
+        </whitelist>
+    </filter>
+    <logging>
+        <log type="coverage-html" target="Build/Artifacts/Reports/PhpUnit/Coverage"/>
+        <log type="coverage-clover" target="Build/Artifacts/Reports/PhpUnit/clover.xml"/>
+        <log type="coverage-crap4j" target="Build/Artifacts/Reports/PhpUnit/crap4j.xml"/>
+        <log type="junit" target="Build/Artifacts/Reports/PhpUnit/junit.xml"/>
+    </logging>
+    <php>
+        <ini name="date.timezone" value="Europe/Berlin"/>
+        <ini name="error_reporting" value="E_ALL &amp; ~E_DEPRECATED"/>
+        <env name="FLOW_REWRITEURLS" value="1"/>
+    </php>
+</phpunit>