diff --git a/composer.json b/composer.json
index ce2f689..adc6ffc 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,8 @@
         "php": "^7.1 || ^8.0",
         "oxid-esales/oxideshop-ce": "~6.7.0 || ~6.9.0 || 6.10 - 6.13",
         "d3/linkmobility-php-client": "^1.2.0 || ^2.0.0",
-        "d3/oxid-dic-handler": "*"
+        "d3/oxid-dic-handler": "^1.0",
+        "d3/testingtools": "^1.1"
     },
     "require-dev": {
       "oxid-esales/oxideshop-ce": "~6.10.0",