diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
index f8dbc3deed9d..8a0b787d3d0b 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/Pipeline.json
@@ -7093,6 +7093,10 @@
         "runConcurrently": {
           "description": "Concurrent run setting used for data flow execution. Allows sinks with the same save order to be processed concurrently. Type: boolean (or Expression with resultType boolean)",
           "type": "object"
+        },
+        "sourceStagingConcurrency": {
+          "description": "Specify number of parallel staging for sources applicable to the sink. Type: integer (or Expression with resultType integer)",
+          "type": "object"
         }
       },
       "required": [