diff --git a/src/index.ts b/src/index.ts
index 55e36a6..7d7ddd7 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,6 @@
 import { ethers, UnsignedTransaction } from "ethers";
 import { getPublicKey, getEthereumAddress, requestKmsSignature, determineCorrectV } from "./util/aws-kms-utils";
-
+import { TypedDataDomain, TypedDataField } from "@ethersproject/abstract-signer";
 export interface AwsKmsSignerCredentials {
   accessKeyId?: string;
   secretAccessKey?: string;
@@ -43,6 +43,11 @@ export class AwsKmsSigner extends ethers.Signer {
     return this._signDigest(ethers.utils.hashMessage(message));
   }
 
+  async signTypedData(domain: TypedDataDomain, types: Record<string, Array<TypedDataField>>, value:  Record<string, any>): Promise<string> {
+    const hash = ethers.utils._TypedDataEncoder.hash(domain, types, value);
+    return this._signDigest(hash);
+  }
+
   async signTransaction(transaction: ethers.utils.Deferrable<ethers.providers.TransactionRequest>): Promise<string> {
     const unsignedTx = await ethers.utils.resolveProperties(transaction);
     const serializedTx = ethers.utils.serializeTransaction(<UnsignedTransaction>unsignedTx);