diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2b4903c82..d3647ac158 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 - @cosmjs/launchpad-ledger: `LedgerSigner.sign` method renamed `signAmino`.
 - @cosmjs/proto-signing: Add new package for handling transaction signing with
   protobuf encoding.
+- @cosmjs/proto-signing: Expose `DirectSignResponse` interface.
 - @cosmjs/stargate: Add new package for Cosmos SDK Stargate support.
 - @cosmjs/tendermint-rpc: Make `Client.detectVersion` private and let it return
   a version instead of a client.
diff --git a/packages/proto-signing/src/directsecp256k1hdwallet.ts b/packages/proto-signing/src/directsecp256k1hdwallet.ts
index 1b869c4b3d..0e0e7f6c80 100644
--- a/packages/proto-signing/src/directsecp256k1hdwallet.ts
+++ b/packages/proto-signing/src/directsecp256k1hdwallet.ts
@@ -80,7 +80,7 @@ export class DirectSecp256k1HdWallet implements OfflineDirectSigner {
   private readonly pubkey: Uint8Array;
   private readonly privkey: Uint8Array;
 
-  private constructor(
+  protected constructor(
     mnemonic: EnglishMnemonic,
     hdPath: HdPath,
     privkey: Uint8Array,
diff --git a/packages/proto-signing/src/index.ts b/packages/proto-signing/src/index.ts
index c6b8cc1fad..f710c8c962 100644
--- a/packages/proto-signing/src/index.ts
+++ b/packages/proto-signing/src/index.ts
@@ -4,5 +4,5 @@ export { EncodeObject, Registry } from "./registry";
 export { DirectSecp256k1HdWallet } from "./directsecp256k1hdwallet";
 export { DirectSecp256k1Wallet } from "./directsecp256k1wallet";
 export { decodePubkey, encodePubkey } from "./pubkey";
-export { isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
+export { DirectSignResponse, isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
 export { makeAuthInfoBytes, makeSignBytes, makeSignDoc } from "./signing";
diff --git a/packages/proto-signing/types/directsecp256k1hdwallet.d.ts b/packages/proto-signing/types/directsecp256k1hdwallet.d.ts
index f557689deb..be0944d86a 100644
--- a/packages/proto-signing/types/directsecp256k1hdwallet.d.ts
+++ b/packages/proto-signing/types/directsecp256k1hdwallet.d.ts
@@ -1,4 +1,4 @@
-import { HdPath } from "@cosmjs/crypto";
+import { EnglishMnemonic, HdPath } from "@cosmjs/crypto";
 import { AccountData } from "@cosmjs/launchpad";
 import { cosmos } from "./codec";
 import { DirectSignResponse, OfflineDirectSigner } from "./signer";
@@ -31,7 +31,13 @@ export declare class DirectSecp256k1HdWallet implements OfflineDirectSigner {
   /** Derived data */
   private readonly pubkey;
   private readonly privkey;
-  private constructor();
+  protected constructor(
+    mnemonic: EnglishMnemonic,
+    hdPath: HdPath,
+    privkey: Uint8Array,
+    pubkey: Uint8Array,
+    prefix: string,
+  );
   get mnemonic(): string;
   private get address();
   getAccounts(): Promise<readonly AccountData[]>;
diff --git a/packages/proto-signing/types/index.d.ts b/packages/proto-signing/types/index.d.ts
index c6b8cc1fad..f710c8c962 100644
--- a/packages/proto-signing/types/index.d.ts
+++ b/packages/proto-signing/types/index.d.ts
@@ -4,5 +4,5 @@ export { EncodeObject, Registry } from "./registry";
 export { DirectSecp256k1HdWallet } from "./directsecp256k1hdwallet";
 export { DirectSecp256k1Wallet } from "./directsecp256k1wallet";
 export { decodePubkey, encodePubkey } from "./pubkey";
-export { isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
+export { DirectSignResponse, isOfflineDirectSigner, OfflineDirectSigner, OfflineSigner } from "./signer";
 export { makeAuthInfoBytes, makeSignBytes, makeSignDoc } from "./signing";