diff --git a/libs/numalogic-registry/requirements/requirements.txt b/libs/numalogic-registry/requirements/requirements.txt
index 45f75436..be808cfe 100644
--- a/libs/numalogic-registry/requirements/requirements.txt
+++ b/libs/numalogic-registry/requirements/requirements.txt
@@ -2,3 +2,4 @@ numalogic
 redis[hiredis]>=4.0
 mlflow-skinny>2.0
 boto3>=1.20
+orjson>=3.9