diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2364ff81f2..6be723bc19 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 - @cosmjs/cosmwasm: `logs` is no longer exported. Use `logs` from
   @cosmjs/launchpad instead.
+- @cosmjs/launchpad: Add `Secp256k1Wallet` to manage a single raw secp256k1
+  keypair.
 
 ## 0.23.1 (2020-10-27)
 
diff --git a/packages/cli/src/cli.ts b/packages/cli/src/cli.ts
index 2633a8e9a9..c0cb5a12cc 100644
--- a/packages/cli/src/cli.ts
+++ b/packages/cli/src/cli.ts
@@ -117,6 +117,7 @@ export async function main(originalArgs: readonly string[]): Promise<void> {
         "PubKey",
         "pubkeyToAddress",
         "Secp256k1HdWallet",
+        "Secp256k1Wallet",
         "SigningCosmosClient",
         "StdFee",
         "StdSignDoc",
@@ -162,6 +163,10 @@ export async function main(originalArgs: readonly string[]): Promise<void> {
 
       assert(Decimal.fromAtomics("12870000", 6).toString() === "12.87");
 
+      const oneKeyWallet = await Secp256k1Wallet.fromKey(fromHex("b8c462d2bb0c1a92edf44f735021f16c270f28ee2c3d1cb49943a5e70a3c763e"));
+      const accounts = await oneKeyWallet.getAccounts();
+      assert(accounts[0].address == "cosmos1kxt5x5q2l57ma2d434pqpafxdm0mgeg9c8cvtx");
+
       const mnemonic = Bip39.encode(Random.getBytes(16)).toString();
       const wallet = await Secp256k1HdWallet.fromMnemonic(mnemonic, makeCosmoshubPath(0));
       const [{ address }] = await wallet.getAccounts();
diff --git a/packages/launchpad/src/index.ts b/packages/launchpad/src/index.ts
index 324b0fd2aa..fb3cd0a8f2 100644
--- a/packages/launchpad/src/index.ts
+++ b/packages/launchpad/src/index.ts
@@ -117,3 +117,4 @@ export { isStdTx, isWrappedStdTx, makeStdTx, CosmosSdkTx, StdTx, WrappedStdTx, W
 export { pubkeyType, PubKey, StdFee, StdSignature } from "./types";
 export { makeCosmoshubPath, executeKdf, KdfConfiguration } from "./wallet";
 export { extractKdfConfiguration, Secp256k1HdWallet } from "./secp256k1hdwallet";
+export { Secp256k1Wallet } from "./secp256k1wallet";
diff --git a/packages/launchpad/types/index.d.ts b/packages/launchpad/types/index.d.ts
index fe5b08ea6d..6580a9a28a 100644
--- a/packages/launchpad/types/index.d.ts
+++ b/packages/launchpad/types/index.d.ts
@@ -115,3 +115,4 @@ export { isStdTx, isWrappedStdTx, makeStdTx, CosmosSdkTx, StdTx, WrappedStdTx, W
 export { pubkeyType, PubKey, StdFee, StdSignature } from "./types";
 export { makeCosmoshubPath, executeKdf, KdfConfiguration } from "./wallet";
 export { extractKdfConfiguration, Secp256k1HdWallet } from "./secp256k1hdwallet";
+export { Secp256k1Wallet } from "./secp256k1wallet";