diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
index 694f6c3edc7f..3f8c0601d1f2 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
@@ -3794,6 +3794,35 @@
         "modelAsString": true
       }
     },
+    "NotebookParameter": {
+      "description": "Notebook parameter.",
+      "type": "object",
+      "properties": {
+        "value": {
+          "type": "object",
+          "description": "Notebook parameter value. Type: string (or Expression with resultType string).",
+          "x-nullable": true
+        },
+        "type": {
+          "description": "Notebook parameter type.",
+          "$ref": "#/definitions/NotebookParameterType"
+        }
+      }
+    },
+    "NotebookParameterType": {
+      "description": "Notebook parameter type.",
+      "type": "string",
+      "enum": [
+        "string",
+        "int",
+        "float",
+        "bool"
+      ],
+      "x-ms-enum": {
+        "name": "NotebookParameterType",
+        "modelAsString": true
+      }
+    },
     "CopySink": {
       "discriminator": "type",
       "description": "A copy activity sink.",
@@ -7180,7 +7209,10 @@
         },
         "parameters": {
           "description": "Notebook parameters.",
-          "$ref": "../artifacts.json#/definitions/ParameterValueSpecification"
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/NotebookParameter"
+          }
         }
       },
       "required": [