diff --git a/src/wallet/walletconnect/WalletConnectV2.ts b/src/wallet/walletconnect/WalletConnectV2.ts
index e09cd374..e2d43195 100644
--- a/src/wallet/walletconnect/WalletConnectV2.ts
+++ b/src/wallet/walletconnect/WalletConnectV2.ts
@@ -19,17 +19,21 @@ type GetAccountResponse = {
   pubkey: string;
 };
 
-type SignAminoResponse =
-  | {
-      // Keplr
-      signature: {
-        signature: string;
-      };
-    }
-  | {
-      // Cosmostation
-      signature: string;
-    };
+type SignAminoResponse = {
+  signature: string;
+  signed: StdSignDoc;
+};
+
+/**
+ * The data returned by the `cosmos_signAmino` for keplr-like wallets. `signed` is
+ * optional because some wallets (like cosmostation) do not return it.
+ */
+type PartialSignAminoResponse = {
+  signature: {
+    signature: string;
+  };
+  signed?: StdSignDoc | undefined;
+};
 
 const Method = {
   GET_ACCOUNTS: "cosmos_getAccounts",
@@ -172,8 +176,8 @@ export class WalletConnectV2 {
     chainId: string,
     signerAddress: string,
     signDoc: StdSignDoc
-  ): Promise<string> {
-    const { signature } = await this.request<SignAminoResponse>(
+  ): Promise<SignAminoResponse> {
+    const { signature, signed } = await this.request<PartialSignAminoResponse>(
       chainId,
       Method.SIGN_AMINO,
       {
@@ -181,7 +185,10 @@ export class WalletConnectV2 {
         signDoc,
       }
     );
-    return typeof signature === "string" ? signature : signature.signature;
+    return {
+      signature: signature.signature,
+      signed: signed ?? signDoc, // simply return the original sign doc if `signed` is not returned
+    };
   }
 
   /**
diff --git a/src/wallet/wallets/cosmostation/CosmostationWalletConnectV2.ts b/src/wallet/wallets/cosmostation/CosmostationWalletConnectV2.ts
index 5ef10998..faf1526c 100644
--- a/src/wallet/wallets/cosmostation/CosmostationWalletConnectV2.ts
+++ b/src/wallet/wallets/cosmostation/CosmostationWalletConnectV2.ts
@@ -3,6 +3,7 @@ import { Adapter, broadcastTx } from "cosmes/client";
 import { fromBase64ToUint8Array } from "cosmes/codec";
 import {
   CosmosBaseV1beta1Coin as Coin,
+  CosmosTxV1beta1Fee as Fee,
   CosmosTxSigningV1beta1SignMode as SignMode,
 } from "cosmes/protobufs";
 import { WalletName, WalletType } from "cosmes/wallet";
@@ -52,7 +53,7 @@ export class CosmostationWalletConnectV2 extends ConnectedWallet {
       opts
     );
     const { memo } = unsignedTx;
-    const signature = await this.wc.signAmino(
+    const { signature, signed } = await this.wc.signAmino(
       this.chainId,
       this.address,
       tx.toStdSignDoc({
@@ -65,12 +66,17 @@ export class CosmostationWalletConnectV2 extends ConnectedWallet {
     );
     // Since `sendTx` on WC isn't implemented yet, we have to broadcast manually
     return broadcastTx(this.rpc, {
-      sequence,
-      fee,
+      tx,
+      sequence: BigInt(signed.sequence),
+      fee: new Fee({
+        amount: signed.fee.amount as Coin[],
+        gasLimit: BigInt(signed.fee.gas),
+        payer: signed.fee.payer,
+        granter: signed.fee.granter,
+      }),
       signMode: SignMode.LEGACY_AMINO_JSON,
       signature: fromBase64ToUint8Array(signature),
-      tx,
-      memo,
+      memo: signed.memo,
     });
   }
 }
diff --git a/src/wallet/wallets/keplr/KeplrWalletConnectV2.ts b/src/wallet/wallets/keplr/KeplrWalletConnectV2.ts
index 98ce17c6..50d740da 100644
--- a/src/wallet/wallets/keplr/KeplrWalletConnectV2.ts
+++ b/src/wallet/wallets/keplr/KeplrWalletConnectV2.ts
@@ -3,6 +3,7 @@ import { Adapter, broadcastTx } from "cosmes/client";
 import { fromBase64ToUint8Array } from "cosmes/codec";
 import {
   CosmosBaseV1beta1Coin as Coin,
+  CosmosTxV1beta1Fee as Fee,
   CosmosTxSigningV1beta1SignMode as SignMode,
 } from "cosmes/protobufs";
 import { WalletName, WalletType } from "cosmes/wallet";
@@ -53,7 +54,7 @@ export class KeplrWalletConnectV2 extends ConnectedWallet {
       opts
     );
     const { memo } = unsignedTx;
-    const signature = await this.wc.signAmino(
+    const { signature, signed } = await this.wc.signAmino(
       this.chainId,
       this.address,
       tx.toStdSignDoc({
@@ -66,12 +67,17 @@ export class KeplrWalletConnectV2 extends ConnectedWallet {
     );
     // Since `sendTx` on WC isn't implemented yet, we have to broadcast manually
     return broadcastTx(this.rpc, {
-      sequence,
-      fee,
+      tx,
+      sequence: BigInt(signed.sequence),
+      fee: new Fee({
+        amount: signed.fee.amount as Coin[],
+        gasLimit: BigInt(signed.fee.gas),
+        payer: signed.fee.payer,
+        granter: signed.fee.granter,
+      }),
       signMode: SignMode.LEGACY_AMINO_JSON,
       signature: fromBase64ToUint8Array(signature),
-      tx,
-      memo,
+      memo: signed.memo,
     });
   }
 }
diff --git a/src/wallet/wallets/leap/LeapWalletConnectV2.ts b/src/wallet/wallets/leap/LeapWalletConnectV2.ts
index 8a4e90b0..3961fb50 100644
--- a/src/wallet/wallets/leap/LeapWalletConnectV2.ts
+++ b/src/wallet/wallets/leap/LeapWalletConnectV2.ts
@@ -3,6 +3,7 @@ import { Adapter, broadcastTx } from "cosmes/client";
 import { fromBase64ToUint8Array } from "cosmes/codec";
 import {
   CosmosBaseV1beta1Coin as Coin,
+  CosmosTxV1beta1Fee as Fee,
   CosmosTxSigningV1beta1SignMode as SignMode,
 } from "cosmes/protobufs";
 import { WalletName, WalletType } from "cosmes/wallet";
@@ -52,7 +53,7 @@ export class LeapWalletConnectV2 extends ConnectedWallet {
       opts
     );
     const { memo } = unsignedTx;
-    const signature = await this.wc.signAmino(
+    const { signature, signed } = await this.wc.signAmino(
       this.chainId,
       this.address,
       tx.toStdSignDoc({
@@ -65,12 +66,17 @@ export class LeapWalletConnectV2 extends ConnectedWallet {
     );
     // Since `sendTx` on WC isn't implemented yet, we have to broadcast manually
     return broadcastTx(this.rpc, {
-      sequence,
-      fee,
+      tx,
+      sequence: BigInt(signed.sequence),
+      fee: new Fee({
+        amount: signed.fee.amount as Coin[],
+        gasLimit: BigInt(signed.fee.gas),
+        payer: signed.fee.payer,
+        granter: signed.fee.granter,
+      }),
       signMode: SignMode.LEGACY_AMINO_JSON,
       signature: fromBase64ToUint8Array(signature),
-      tx,
-      memo,
+      memo: signed.memo,
     });
   }
 }