diff --git a/schemas/2019-06-01-preview/Microsoft.Synapse.json b/schemas/2019-06-01-preview/Microsoft.Synapse.json
index 86a8b6d482..546fa78361 100644
--- a/schemas/2019-06-01-preview/Microsoft.Synapse.json
+++ b/schemas/2019-06-01-preview/Microsoft.Synapse.json
@@ -1110,6 +1110,20 @@
           "format": "date-time",
           "description": "The time when the Big Data pool was created."
         },
+        "customLibraries": {
+          "oneOf": [
+            {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/LibraryInfo"
+              }
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "List of custom libraries/packages associated with the spark pool."
+        },
         "defaultSparkLogFolder": {
           "type": "string",
           "description": "The default folder where Spark logs will be written."
@@ -1186,6 +1200,17 @@
           "type": "string",
           "description": "The state of the Big Data pool."
         },
+        "sessionLevelPackagesEnabled": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Whether session level library/package management is enabled or not."
+        },
         "sparkConfigProperties": {
           "oneOf": [
             {
@@ -2051,6 +2076,33 @@
       },
       "description": "IP firewall rule properties"
     },
+    "LibraryInfo": {
+      "type": "object",
+      "properties": {
+        "containerName": {
+          "type": "string",
+          "description": "Storage blob container name."
+        },
+        "name": {
+          "type": "string",
+          "description": "Name of the library."
+        },
+        "path": {
+          "type": "string",
+          "description": "Storage blob path of library."
+        },
+        "type": {
+          "type": "string",
+          "description": "Type of the library."
+        },
+        "uploadedTimestamp": {
+          "type": "string",
+          "format": "date-time",
+          "description": "The last update time of the library."
+        }
+      },
+      "description": "Library/package information of a Big Data pool powered by Apache Spark"
+    },
     "LibraryRequirements": {
       "type": "object",
       "properties": {