diff --git a/modules/sdk-coin-opeth/src/opeth.ts b/modules/sdk-coin-opeth/src/opeth.ts
index 2ff8a0066f..0b7c3aadd5 100644
--- a/modules/sdk-coin-opeth/src/opeth.ts
+++ b/modules/sdk-coin-opeth/src/opeth.ts
@@ -32,6 +32,16 @@ export class Opeth extends AbstractEthLikeNewCoins {
     return 'ecdsa';
   }
 
+  /** @inheritDoc */
+  supportsMessageSigning(): boolean {
+    return true;
+  }
+
+  /** @inheritDoc */
+  supportsSigningTypedData(): boolean {
+    return true;
+  }
+
   /**
    * Make a query to Optimism Etherscan for information such as balance, token balance, solidity calls
    * @param {Object} query key-value pairs of parameters to append after /api