diff --git a/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-05-01/bigDataPool.json b/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-05-01/bigDataPool.json
index 2554fdf37f14..ba6efc5c6a9e 100644
--- a/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-05-01/bigDataPool.json
+++ b/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-05-01/bigDataPool.json
@@ -481,7 +481,9 @@
         "nodeSizeFamily": {
           "enum": [
             "None",
-            "MemoryOptimized"
+            "MemoryOptimized",
+            "HardwareAcceleratedFPGA",
+            "HardwareAcceleratedGPU"
           ],
           "type": "string",
           "description": "The kind of nodes that the Big Data pool provides.",