diff --git a/specification/synapse/data-plane/Microsoft.Synapse/preview/2021-06-01-preview/entityTypes/Pipeline.json b/specification/synapse/data-plane/Microsoft.Synapse/preview/2021-06-01-preview/entityTypes/Pipeline.json
index 7c9801518e66..9560856bd594 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/preview/2021-06-01-preview/entityTypes/Pipeline.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/preview/2021-06-01-preview/entityTypes/Pipeline.json
@@ -5990,6 +5990,10 @@
           "description": "Authentication method used for calling the endpoint.",
           "$ref": "#/definitions/WebActivityAuthentication"
         },
+        "disableCertValidation": {
+          "type": "boolean",
+          "description": "When set to true, Certificate validation will be disabled."
+        },
         "datasets": {
           "type": "array",
           "description": "List of datasets passed to web endpoint.",