diff --git a/om/hash.go b/om/hash.go
index 66f59c13..c237db12 100644
--- a/om/hash.go
+++ b/om/hash.go
@@ -134,6 +134,12 @@ func (r *HashRepository[T]) Remove(ctx context.Context, id string) error {
 	return r.client.Do(ctx, r.client.B().Del().Key(key(r.prefix, id)).Build()).Error()
 }
 
+// AlterIndex uses FT.ALTER from the RediSearch module to alter index under the name `hashidx:{prefix}`
+// You can use the cmdFn parameter to mutate the index alter command.
+func (r *HashRepository[T]) AlterIndex(ctx context.Context, cmdFn func(alter FtAlterIndex) rueidis.Completed) error {
+	return r.client.Do(ctx, cmdFn(r.client.B().FtAlter().Index(r.idx))).Error()
+}
+
 // CreateIndex uses FT.CREATE from the RediSearch module to create inverted index under the name `hashidx:{prefix}`
 // You can use the cmdFn parameter to mutate the index construction command.
 func (r *HashRepository[T]) CreateIndex(ctx context.Context, cmdFn func(schema FtCreateSchema) rueidis.Completed) error {
diff --git a/om/json.go b/om/json.go
index 7b828471..0eb01cb7 100644
--- a/om/json.go
+++ b/om/json.go
@@ -132,6 +132,12 @@ func (r *JSONRepository[T]) Remove(ctx context.Context, id string) error {
 	return r.client.Do(ctx, r.client.B().Del().Key(key(r.prefix, id)).Build()).Error()
 }
 
+// AlterIndex uses FT.ALTER from the RediSearch module to alter index under the name `jsonidx:{prefix}`
+// You can use the cmdFn parameter to mutate the index alter command.
+func (r *JSONRepository[T]) AlterIndex(ctx context.Context, cmdFn func(alter FtAlterIndex) rueidis.Completed) error {
+	return r.client.Do(ctx, cmdFn(r.client.B().FtAlter().Index(r.idx))).Error()
+}
+
 // CreateIndex uses FT.CREATE from the RediSearch module to create inverted index under the name `jsonidx:{prefix}`
 // You can use the cmdFn parameter to mutate the index construction command,
 // and note that the field name should be specified with JSON path syntax, otherwise the index may not work as expected.
diff --git a/om/repo.go b/om/repo.go
index 99ef8160..bf149102 100644
--- a/om/repo.go
+++ b/om/repo.go
@@ -16,6 +16,8 @@ type (
 	FtSearchIndex = cmds.FtSearchIndex
 	// FtAggregateIndex is the FT.AGGREGATE command builder
 	FtAggregateIndex = cmds.FtAggregateIndex
+	// FtAlterSchema is the FT.ALTERINDEX command builder
+	FtAlterIndex = cmds.FtAlterIndex
 	// Arbitrary is alias to cmds.Arbitrary. This allows user build arbitrary command in Repository.CreateIndex
 	Arbitrary = cmds.Arbitrary
 )
@@ -43,6 +45,7 @@ type Repository[T any] interface {
 	SaveMulti(ctx context.Context, entity ...*T) (errs []error)
 	Remove(ctx context.Context, id string) error
 	CreateIndex(ctx context.Context, cmdFn func(schema FtCreateSchema) rueidis.Completed) error
+	AlterIndex(ctx context.Context, cmdFn func(alter FtAlterIndex) rueidis.Completed) error
 	DropIndex(ctx context.Context) error
 	IndexName() string
 }