diff --git a/src/verify-signature.ts b/src/verify-signature.ts
index 10038bc..f12df3f 100644
--- a/src/verify-signature.ts
+++ b/src/verify-signature.ts
@@ -23,6 +23,9 @@ export const verifySignatureFromApiUrl = async (
     protected: header,
     payload: rawBody,
     signature: jwsSignature,
+    header: {
+      b64: true,
+    },
   };
 
   const remoteJwks = jose.createRemoteJWKSet(