diff --git a/CHANGELOG.md b/CHANGELOG.md
index c77f8cc2c8..b8af0f84b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Fixed
+
+- @cosmjs/cosmwasm-stargate: Fix `ContractCodeHistory` decoding when msg contains non-printable ASCII ([#1320]).
+
+[#1320]: https://github.com/cosmos/cosmjs/pull/1320
+
 ## [0.29.3] - 2022-10-25
 
 ### Added
diff --git a/packages/cosmwasm-stargate/src/cosmwasmclient.ts b/packages/cosmwasm-stargate/src/cosmwasmclient.ts
index ba896663c3..ab357d9aa4 100644
--- a/packages/cosmwasm-stargate/src/cosmwasmclient.ts
+++ b/packages/cosmwasm-stargate/src/cosmwasmclient.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/naming-convention */
-import { fromAscii, toHex } from "@cosmjs/encoding";
+import { fromUtf8, toHex } from "@cosmjs/encoding";
 import { Uint53 } from "@cosmjs/math";
 import {
   Account,
@@ -415,7 +415,7 @@ export class CosmWasmClient {
       return {
         operation: operations[entry.operation],
         codeId: entry.codeId.toNumber(),
-        msg: JSON.parse(fromAscii(entry.msg)),
+        msg: JSON.parse(fromUtf8(entry.msg)),
       };
     });
   }