diff --git a/baseapp/baseapp.go b/baseapp/baseapp.go
index c9bdf6c348ae..c2d0e2ea015f 100644
--- a/baseapp/baseapp.go
+++ b/baseapp/baseapp.go
@@ -13,7 +13,6 @@ import (
 	cmtproto "github.com/cometbft/cometbft/api/cometbft/types/v1"
 	"github.com/cometbft/cometbft/crypto/tmhash"
 	"github.com/cosmos/gogoproto/proto"
-	"golang.org/x/exp/maps"
 	"google.golang.org/protobuf/reflect/protoreflect"
 
 	"cosmossdk.io/core/header"
@@ -336,7 +335,10 @@ func (app *BaseApp) MountTransientStores(keys map[string]*storetypes.TransientSt
 // MountMemoryStores mounts all in-memory KVStores with the BaseApp's internal
 // commit multi-store.
 func (app *BaseApp) MountMemoryStores(keys map[string]*storetypes.MemoryStoreKey) {
-	skeys := maps.Keys(keys)
+	skeys := make([]string, 0, len(keys))
+	for key := range keys {
+		skeys = append(skeys, key)
+	}
 	sort.Strings(skeys)
 	for _, key := range skeys {
 		memKey := keys[key]
@@ -347,7 +349,10 @@ func (app *BaseApp) MountMemoryStores(keys map[string]*storetypes.MemoryStoreKey
 // MountObjectStores mounts all transient object stores with the BaseApp's internal
 // commit multi-store.
 func (app *BaseApp) MountObjectStores(keys map[string]*storetypes.ObjectStoreKey) {
-	skeys := maps.Keys(keys)
+	skeys := make([]string, 0, len(keys))
+	for key := range keys {
+		skeys = append(skeys, key)
+	}
 	sort.Strings(skeys)
 	for _, key := range skeys {
 		memKey := keys[key]
diff --git a/store/CHANGELOG.md b/store/CHANGELOG.md
index 4d170bff0edc..63e4848a718c 100644
--- a/store/CHANGELOG.md
+++ b/store/CHANGELOG.md
@@ -31,6 +31,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Features
+
+* [#22893](https://github.com/cosmos/cosmos-sdk/pull/22893) Support mount object store in baseapp, add `ObjectStore` api in context.
+
 ## v1.10.0 (December 13, 2024)
 
 ### Improvements