diff --git a/packages/core/src/test/index.spec.ts b/packages/core/src/test/index.spec.ts
index ebf93430..d2b4ff89 100644
--- a/packages/core/src/test/index.spec.ts
+++ b/packages/core/src/test/index.spec.ts
@@ -1,9 +1,8 @@
 import { SDJwtInstance, SdJwtPayload } from '../index';
-import { Signer, Verifier } from '@sd-jwt/types';
+import { Signer, Verifier, KbVerifier, JwtPayload } from '@sd-jwt/types';
 import Crypto, { KeyLike } from 'node:crypto';
 import { describe, expect, test } from 'vitest';
 import { digest, generateSalt } from '@sd-jwt/crypto-nodejs';
-import { KbVerifier, JwtPayload } from '@sd-jwt/types';
 import { importJWK, exportJWK, JWK } from 'jose';
 
 export const createSignerVerifier = () => {
diff --git a/packages/types/src/type.ts b/packages/types/src/type.ts
index b5f3918b..10223dff 100644
--- a/packages/types/src/type.ts
+++ b/packages/types/src/type.ts
@@ -34,6 +34,27 @@ export type KBOptions = {
   payload: Omit<kbPayload, 'sd_hash'>;
 };
 
+interface JsonWebKey {
+  alg?: string;
+  crv?: string;
+  d?: string;
+  dp?: string;
+  dq?: string;
+  e?: string;
+  ext?: boolean;
+  k?: string;
+  key_ops?: string[];
+  kty?: string;
+  n?: string;
+  oth?: RsaOtherPrimesInfo[];
+  p?: string;
+  q?: string;
+  qi?: string;
+  use?: string;
+  x?: string;
+  y?: string;
+}
+
 export interface JwtPayload {
   cnf?: {
     jwk: JsonWebKey;