diff --git a/src/api/src/backend/views/http/requests.py b/src/api/src/backend/views/http/requests.py
index 93b7860a..dd8579dd 100644
--- a/src/api/src/backend/views/http/requests.py
+++ b/src/api/src/backend/views/http/requests.py
@@ -655,7 +655,7 @@ class FunctionTask(BaseTask):
 class Pipeline(BaseModel):
     id: ID
     type: EnumPipelineType = EnumPipelineType.Workflow
-    uses: Union[str, Uses] = {}
+    uses: Union[str, Uses] = None
     tasks: List[
         Annotated[
             Union[
diff --git a/src/engine/src/owe_python_sdk/schema.py b/src/engine/src/owe_python_sdk/schema.py
index 93b7860a..dd8579dd 100644
--- a/src/engine/src/owe_python_sdk/schema.py
+++ b/src/engine/src/owe_python_sdk/schema.py
@@ -655,7 +655,7 @@ class FunctionTask(BaseTask):
 class Pipeline(BaseModel):
     id: ID
     type: EnumPipelineType = EnumPipelineType.Workflow
-    uses: Union[str, Uses] = {}
+    uses: Union[str, Uses] = None
     tasks: List[
         Annotated[
             Union[