diff --git a/apps/docs/src/components/test-zkapp.tsx b/apps/docs/src/components/test-zkapp.tsx
index b63f117..1b45e20 100644
--- a/apps/docs/src/components/test-zkapp.tsx
+++ b/apps/docs/src/components/test-zkapp.tsx
@@ -2,7 +2,7 @@ import { createStore } from "@mina-js/connect";
 import { useLocalStorage, useObjectState } from "@uidotdev/usehooks";
 import { clsx } from "clsx";
 import { useState, useSyncExternalStore } from "react";
-import { sampleCredential1, samplePresentationRequest } from "./sample-data";
+import { sampleCredential, samplePresentationRequest } from "./sample-data";
 
 const store = createStore();
 
@@ -14,7 +14,7 @@ export const TestZkApp = () => {
 	const [message, setMessage] = useState("A message to sign");
 	const [fields, setFields] = useState('["1", "2", "3"]');
 	const [credentialInput, setCredentialInput] = useState(
-		JSON.stringify(sampleCredential1, null, 2),
+		JSON.stringify(sampleCredential, null, 2),
 	);
 	const [presentationRequest, setPresentationRequest] = useState(
 		JSON.stringify(samplePresentationRequest, null, 2),
diff --git a/packages/providers/src/validation.ts b/packages/providers/src/validation.ts
index 7525f22..d8a0c4b 100644
--- a/packages/providers/src/validation.ts
+++ b/packages/providers/src/validation.ts
@@ -1,5 +1,6 @@
 import {
 	FieldSchema,
+	FieldsAndPassphraseSchema,
 	JsonSchema,
 	NetworkId,
 	NullifierSchema,
@@ -59,6 +60,10 @@ export const SignFieldsRequestParamsSchema = RequestWithContext.extend({
 	method: z.literal("mina_signFields"),
 	params: z.array(z.array(FieldSchema)),
 }).strict();
+export const signFieldsWithPassphraseParamsSchema = RequestWithContext.extend({
+	method: z.literal("mina_signFieldsWithPassphrase"),
+	params: z.array(FieldsAndPassphraseSchema),
+});
 export const SignTransactionRequestParamsSchema = RequestWithContext.extend({
 	method: z.literal("mina_signTransaction"),
 	params: z.array(z.union([TransactionPayloadSchema, ZkAppCommandPayload])),
@@ -140,6 +145,10 @@ export const SignFieldsRequestReturnSchema = z
 		result: SignedFieldsSchema,
 	})
 	.strict();
+export const signFieldsWithPassphraseRequestReturnSchema = z.object({
+	method: z.literal("mina_signFieldsWithPassphrase"),
+	result: SignedFieldsSchema,
+});
 export const SignTransactionRequestReturnSchema = z
 	.object({
 		method: z.literal("mina_signTransaction"),
@@ -212,6 +221,7 @@ export const RpcReturnTypesUnion = z.discriminatedUnion("method", [
 	GetStateRequestReturnSchema,
 	StorePrivateCredentialReturnSchema,
 	PresentationRequestReturnSchema,
+	signFieldsWithPassphraseRequestReturnSchema,
 ]);
 
 export const ProviderRequestParamsUnion = z.discriminatedUnion("method", [
@@ -231,6 +241,7 @@ export const ProviderRequestParamsUnion = z.discriminatedUnion("method", [
 	GetStateRequestParamsSchema,
 	StorePrivateCredentialRequestParamsSchema,
 	PresentationRequestParamsSchema,
+	signFieldsWithPassphraseParamsSchema,
 ]);
 export type RpcReturnTypesUnionType = z.infer<typeof RpcReturnTypesUnion>;
 export type ResultType<M extends string> = {
diff --git a/packages/utils/src/validation.ts b/packages/utils/src/validation.ts
index 883fa45..fc3a02e 100644
--- a/packages/utils/src/validation.ts
+++ b/packages/utils/src/validation.ts
@@ -79,6 +79,13 @@ export const ZkAppCommandPayload = z
 	})
 	.strict();
 
+export const FieldsAndPassphraseSchema = z
+	.object({
+		fields: z.array(FieldSchema),
+		passphrase: z.string(),
+	})
+	.strict();
+
 /**
  * Return type schemas
  */