diff --git a/do.py b/do.py
index e088d91e..6942b4f4 100644
--- a/do.py
+++ b/do.py
@@ -36,8 +36,8 @@
 USE_MODELS_DIR = None
 
 # supported values - branch name or None
-USE_OPENAPIART_BRANCH = None
-USE_MODELS_BRANCH = None
+USE_OPENAPIART_BRANCH = "x-field-random-support"
+USE_MODELS_BRANCH = "support-random-udf"
 
 OPENAPIART_REPO = "https://github.com/open-traffic-generator/openapiart.git"
 MODELS_REPO = "https://github.com/open-traffic-generator/models.git"