diff --git a/baseapp/streaming.go b/baseapp/streaming.go
index 7d88c2d196..7e2e98db09 100644
--- a/baseapp/streaming.go
+++ b/baseapp/streaming.go
@@ -37,10 +37,11 @@ const (
 // types of streaming listeners.
 func (app *BaseApp) EnableIndexer(indexerOpts interface{}, keys map[string]*storetypes.KVStoreKey, appModules map[string]any) error {
 	listener, err := indexer.StartIndexing(indexer.IndexingOptions{
-		Config:     indexerOpts,
-		Resolver:   decoding.ModuleSetDecoderResolver(appModules),
-		SyncSource: nil,
-		Logger:     app.logger.With(log.ModuleKey, "indexer"),
+		Config:       indexerOpts,
+		Resolver:     decoding.ModuleSetDecoderResolver(appModules),
+		Logger:       app.logger.With(log.ModuleKey, "indexer"),
+		SyncSource:   nil, // TODO: Support catch-up syncs
+		AddressCodec: app.interfaceRegistry.SigningContext().AddressCodec(),
 	})
 	if err != nil {
 		return err
diff --git a/server/v2/cometbft/server.go b/server/v2/cometbft/server.go
index 1182924a4f..02cf66dbf3 100644
--- a/server/v2/cometbft/server.go
+++ b/server/v2/cometbft/server.go
@@ -151,9 +151,11 @@ func New[T transaction.Tx](
 	var listener *appdata.Listener
 	if indexerCfg := srv.config.AppTomlConfig.Indexer; len(indexerCfg.Target) > 0 {
 		indexingTarget, err := indexer.StartIndexing(indexer.IndexingOptions{
-			Config:   indexerCfg,
-			Resolver: decoderResolver,
-			Logger:   logger.With(log.ModuleKey, "indexer"),
+			Config:       indexerCfg,
+			Resolver:     decoderResolver,
+			Logger:       logger.With(log.ModuleKey, "indexer"),
+			SyncSource:   nil, // TODO: Support catch-up syncs
+			AddressCodec: appCodecs.AppCodec.InterfaceRegistry().SigningContext().AddressCodec(),
 		})
 		if err != nil {
 			return nil, fmt.Errorf("failed to start indexing: %w", err)
diff --git a/types/collections.go b/types/collections.go
index cb7490af13..00e3904357 100644
--- a/types/collections.go
+++ b/types/collections.go
@@ -8,6 +8,7 @@ import (
 	"cosmossdk.io/collections"
 	collcodec "cosmossdk.io/collections/codec"
 	"cosmossdk.io/math"
+	"cosmossdk.io/schema"
 )
 
 var (
@@ -119,6 +120,28 @@ func (a genericAddressKey[T]) SizeNonTerminal(key T) int {
 	return collections.BytesKey.SizeNonTerminal(key)
 }
 
+func (a genericAddressKey[T]) SchemaCodec() (collcodec.SchemaCodec[T], error) {
+	return collcodec.SchemaCodec[T]{
+		Fields: []schema.Field{{Kind: schema.AddressKind}},
+		ToSchemaType: func(t T) (any, error) {
+			if len(t) == 0 {
+				return nil, fmt.Errorf("invalid empty address")
+			}
+			return t, nil
+		},
+		FromSchemaType: func(s any) (T, error) {
+			addr, ok := s.([]byte)
+			if !ok {
+				return nil, fmt.Errorf("expected []byte, got %T", s)
+			}
+			if len(addr) == 0 {
+				return nil, fmt.Errorf("invalid empty address")
+			}
+			return T(addr), nil
+		},
+	}, nil
+}
+
 // Deprecated: lengthPrefixedAddressKey is a special key codec used to retain state backwards compatibility
 // when a generic address key (be: AccAddress, ValAddress, ConsAddress), is used as an index key.
 // More docs can be found in the LengthPrefixedAddressKey function.
@@ -221,6 +244,26 @@ func (i intValueCodec) ValueType() string {
 	return Int
 }
 
+func (i intValueCodec) SchemaCodec() (collcodec.SchemaCodec[math.Int], error) {
+	return collcodec.SchemaCodec[math.Int]{
+		Fields: []schema.Field{{Kind: schema.IntegerKind}},
+		ToSchemaType: func(t math.Int) (any, error) {
+			return t.String(), nil
+		},
+		FromSchemaType: func(s any) (math.Int, error) {
+			sz, ok := s.(string)
+			if !ok {
+				return math.Int{}, fmt.Errorf("expected string, got %T", s)
+			}
+			t, ok := math.NewIntFromString(sz)
+			if !ok {
+				return math.Int{}, fmt.Errorf("failed to parse Int from string: %s", sz)
+			}
+			return t, nil
+		},
+	}, nil
+}
+
 type uintValueCodec struct{}
 
 func (i uintValueCodec) Encode(value math.Uint) ([]byte, error) {