diff --git a/composer.json b/composer.json
index 7ca2bda..89e858a 100644
--- a/composer.json
+++ b/composer.json
@@ -18,10 +18,15 @@
       }
     ],
     "require": {
-        "php": "^7.0 || ^8.0",
+        "php": "^7.1 || ^8.0",
         "oxid-esales/oxideshop-ce": "6.7 - 6.10",
         "d3/linkmobility-php-client": "^1.2.0 || ^2.0.0"
     },
+    "require-dev": {
+      "oxid-esales/oxideshop-ce": "~6.10.0",
+      "friendsofphp/php-cs-fixer": "^2.19",
+      "phpstan/phpstan": "^1.8"
+    },
     "extra": {
       "oxideshop": {
         "source-directory": "/src",
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..045b26d
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,7 @@
+parameters:
+    scanFiles:
+      - src/IntelliSenseHelper.php
+    paths:
+        - src
+    level: 0
+    phpVersion: 70100