diff --git a/composer.json b/composer.json
index 93dc859..5a3170a 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,9 @@
     "autoload": {
         "files": [
             "registration.php"
-        ]
+        ],
+        "psr-4": {
+            "Yumdap\\ProductHeight": ""
+        }
     }
 }