diff --git a/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json b/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
index 3b13d4547ff0..75ac4fda72f3 100644
--- a/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
+++ b/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
@@ -450,7 +450,7 @@
           }
         },
         "sparkConfigProperties": {
-          "$ref": "#/definitions/LibraryRequirements",
+          "$ref": "#/definitions/SparkConfigProperties",
           "description": "Spark configuration file to specify additional properties"
         },
         "sparkVersion": {
@@ -606,6 +606,39 @@
           "description": "The filename of the library requirements file."
         }
       }
+    },
+    "SparkConfigProperties": {
+      "type": "object",
+      "description": "SparkConfig Properties for a Big Data pool powered by Apache Spark",
+      "title": "Spark pool Config Properties",
+      "properties": {
+        "time": {
+          "type": "string",
+          "format": "date-time",
+          "readOnly": true,
+          "description": "The last update time of the spark config properties file."
+        },
+        "content": {
+          "type": "string",
+          "description": "The spark config properties."
+        },
+        "filename": {
+          "type": "string",
+          "description": "The filename of the spark config properties file."
+        },
+        "configurationType": {
+          "enum": [
+            "File",
+            "Artifact"
+          ],
+          "type": "string",
+          "description": "The type of the spark config properties file.",
+          "x-ms-enum": {
+            "name": "ConfigurationType",
+            "modelAsString": true
+          }
+        }
+      }
     }
   }
 }