diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index fef9e7d..677ab24 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1']
+        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
         os: ['ubuntu-latest']
 
     steps:
@@ -31,12 +31,20 @@ jobs:
           tools: phpcs
 
       - name: Setup dependencies
-        run: composer require -n --no-progress overtrue/phplint
+        run: |
+          composer require -n --no-progress overtrue/phplint ipl/i18n:@dev
+          git clone --depth 1 https://github.com/Icinga/icingaweb2.git vendor/icingaweb2
+          git clone --depth 1 https://github.com/Icinga/icingadb-web.git vendor/icingadb-web
+          git clone --depth 1 -b snapshot/nightly https://github.com/Icinga/icinga-php-thirdparty.git vendor/icinga-php-thirdparty
 
       - name: PHP Lint
-        if: success() || matrix.allow_failure
+        if: ${{ ! cancelled() }}
         run: ./vendor/bin/phplint -n --exclude={^vendor/.*} -- .
 
       - name: PHP CodeSniffer
-        if: success() || matrix.allow_failure
+        if: ${{ ! cancelled() }}
         run: phpcs
+
+      - name: PHPStan
+        if: ${{ ! cancelled() }}
+        uses: php-actions/phpstan@v3
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
new file mode 100644
index 0000000..3acf2b3
--- /dev/null
+++ b/phpstan-baseline.neon
@@ -0,0 +1,96 @@
+parameters:
+	ignoreErrors:
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Controllers\\\\IntegrationsController\\:\\:indexAction\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Controllers\\\\IntegrationsController\\:\\:newAction\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Controllers\\\\IntegrationsController\\:\\:removeAction\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Controllers\\\\IntegrationsController\\:\\:updateAction\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Parameter \\#1 \\$name of method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:bind\\(\\) expects string, mixed given\\.$#"
+			count: 2
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Parameter \\#1 \\$name of method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:remove\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: application/controllers/IntegrationsController.php
+
+		-
+			message: "#^Cannot call method getValue\\(\\) on Zend_Form_Element\\|null\\.$#"
+			count: 3
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:add\\(\\) has parameter \\$values with no value type specified in iterable type array\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:createElements\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:createElements\\(\\) has parameter \\$formData with no value type specified in iterable type array\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:onRequest\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:update\\(\\) has parameter \\$values with no value type specified in iterable type array\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Parameter \\#1 \\$name of method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:add\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Parameter \\#1 \\$name of method Icinga\\\\Module\\\\Generictts\\\\Forms\\\\Config\\\\TtsIntegrationConfigForm\\:\\:update\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: application/forms/Config/TtsIntegrationConfigForm.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Ticket\\:\\:createLink\\(\\) has parameter \\$match with no value type specified in iterable type array\\.$#"
+			count: 1
+			path: library/Generictts/Ticket.php
+
+		-
+			message: "#^Method Icinga\\\\Module\\\\Generictts\\\\Ticket\\:\\:init\\(\\) has no return type specified\\.$#"
+			count: 1
+			path: library/Generictts/Ticket.php
+
+		-
+			message: "#^Parameter \\#1 \\$string of function rawurlencode expects string, string\\|null given\\.$#"
+			count: 1
+			path: library/Generictts/Ticket.php
+
+		-
+			message: "#^Parameter \\#2 \\$pattern of method Icinga\\\\Application\\\\Hook\\\\TicketHook\\:\\:createTicketPattern\\(\\) expects string, mixed given\\.$#"
+			count: 1
+			path: library/Generictts/Ticket.php
+
+		-
+			message: "#^Parameter \\#3 \\$subject of function preg_replace expects array\\|string, mixed given\\.$#"
+			count: 1
+			path: library/Generictts/Ticket.php
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..3f551c5
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,26 @@
+includes:
+    - phpstan-baseline.neon
+
+parameters:
+    level: max
+
+    checkFunctionNameCase: true
+    checkInternalClassCaseSensitivity: true
+    treatPhpDocTypesAsCertain: false
+
+    paths:
+        - application
+        - library
+
+    scanDirectories:
+        - vendor
+
+    ignoreErrors:
+        -
+            messages:
+                - '#Unsafe usage of new static\(\)#'
+                - '#. but return statement is missing#'
+            reportUnmatched: false
+
+    universalObjectCratesClasses:
+        - Icinga\Web\View