diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68012ac8..783a11ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,6 +33,12 @@ and this project adheres to
   only updated for the class `Tendermint34Client`, not for `Client`. Please
   migrate to the former.
 
+### Deprecated
+
+- @cosmjs/tendermint-rpc: `Client` has been deprecated. Launchpad applications
+  do not need a Tendermint RPC client and Stargate applications should use
+  `Tendermint34Client`.
+
 ## [0.24.0] - 2021-03-11
 
 - @cosmjs/cosmwasm: This package is now deprecated. The same functionality is
diff --git a/packages/tendermint-rpc/src/legacy/client.ts b/packages/tendermint-rpc/src/legacy/client.ts
index 7d5ce30f..5bfe5e95 100644
--- a/packages/tendermint-rpc/src/legacy/client.ts
+++ b/packages/tendermint-rpc/src/legacy/client.ts
@@ -14,6 +14,7 @@ import { adaptorForVersion } from "./adaptors";
 import * as requests from "./requests";
 import * as responses from "./responses";
 
+/** @deprecated Use Tendermint34Client */
 export class Client {
   /**
    * Creates a new Tendermint client for the given endpoint.