diff --git a/schemas/2019-06-01-preview/Microsoft.Synapse.json b/schemas/2019-06-01-preview/Microsoft.Synapse.json
index 96239fb448..de5cf09423 100644
--- a/schemas/2019-06-01-preview/Microsoft.Synapse.json
+++ b/schemas/2019-06-01-preview/Microsoft.Synapse.json
@@ -1036,6 +1036,17 @@
           "type": "string",
           "description": "The state of the Big Data pool."
         },
+        "sparkConfigProperties": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/LibraryRequirements"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Library requirements for a Big Data pool powered by Apache Spark"
+        },
         "sparkEventsFolder": {
           "type": "string",
           "description": "The Spark events folder"