diff --git a/attribute-service/src/main/resources/configs/common/application.conf b/attribute-service/src/main/resources/configs/common/application.conf
index 0c3f4bc5..61f55ccd 100644
--- a/attribute-service/src/main/resources/configs/common/application.conf
+++ b/attribute-service/src/main/resources/configs/common/application.conf
@@ -7,6 +7,7 @@ document.store {
     host = localhost
     host = ${?MONGO_HOST} # provides a way to override the mongo_host via an environment variable
     port = 27017
+    port = ${?MONGO_PORT}
   }
 }
 attributes.type.server.port = 9012