diff --git a/src/lib/seed.ts b/src/lib/seed.ts
index 9ccde2b..a78e6d1 100644
--- a/src/lib/seed.ts
+++ b/src/lib/seed.ts
@@ -21,7 +21,7 @@ export function getHDKey(): HDKey {
   return HDKey.fromMasterSeed(getSeed()).derive(BIP44_PATH);
 }
 
-export function getKeyPair() {
+export function getKeyPair(): { publicKey: Uint8Array; secretKey: Uint8Array } {
   const key = getHDKey();
 
   return { publicKey: key.publicKeyRaw, secretKey: key.privateKey };