diff --git a/apps/extension/package.json b/apps/extension/package.json
index dbbb9d79e..1d259a058 100644
--- a/apps/extension/package.json
+++ b/apps/extension/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "z3us-extension",
-	"version": "2.0.48",
+	"version": "2.0.49",
 	"type": "module",
 	"scripts": {
 		"clean": "rm -rf .turbo && rm -rf node_modules && rm -rf dist",
diff --git a/apps/extension/src/hooks/transaction/use-preview.tsx b/apps/extension/src/hooks/transaction/use-preview.tsx
index c2b248b90..9b15991e8 100644
--- a/apps/extension/src/hooks/transaction/use-preview.tsx
+++ b/apps/extension/src/hooks/transaction/use-preview.tsx
@@ -1,5 +1,5 @@
 import type { Intent } from '@radixdlt/radix-engine-toolkit'
-import { RadixEngineToolkit, generateRandomNonce } from '@radixdlt/radix-engine-toolkit'
+import { Convert, RadixEngineToolkit, generateRandomNonce } from '@radixdlt/radix-engine-toolkit'
 import { useCallback } from 'react'
 
 import { useGatewayClient } from 'ui/src/hooks/dapp/use-gateway-client'
@@ -39,9 +39,12 @@ export const usePreview = () => {
 			'String',
 		)
 
+		const blobs = intent.manifest.blobs?.map(blob => Convert.Uint8Array.toHexString(blob)) || []
+
 		return transaction.innerClient.transactionPreview({
 			transactionPreviewRequest: {
 				manifest: manifest.value as string,
+				blobs_hex: blobs,
 				start_epoch_inclusive: validFromEpoch,
 				end_epoch_exclusive: validFromEpoch + 10,
 				nonce: generateRandomNonce(),