diff --git a/go.mod b/go.mod
index 3b02905..7a339d5 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.23
 require (
 	github.com/aws/aws-sdk-go-v2 v1.41.1
 	github.com/aws/aws-sdk-go-v2/config v1.32.7
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.0
+	github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.2
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.96.0
 )
 
diff --git a/go.sum b/go.sum
index 6bbd50b..8a9509b 100644
--- a/go.sum
+++ b/go.sum
@@ -8,8 +8,8 @@ github.com/aws/aws-sdk-go-v2/credentials v1.19.7 h1:tHK47VqqtJxOymRrNtUXN5SP/zUT
 github.com/aws/aws-sdk-go-v2/credentials v1.19.7/go.mod h1:qOZk8sPDrxhf+4Wf4oT2urYJrYt3RejHSzgAquYeppw=
 github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.17 h1:I0GyV8wiYrP8XpA70g1HBcQO1JlQxCMTW9npl5UbDHY=
 github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.17/go.mod h1:tyw7BOl5bBe/oqvoIeECFJjMdzXoa/dfVz3QQ5lgHGA=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.0 h1:MpkX8EjkwuvyuX9B7+Zgk5M4URb2WQ84Y6jM81n5imw=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.0/go.mod h1:4V9Pv5sFfMPWQF0Q0zYN6BlV/504dFGaTeogallRqQw=
+github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.2 h1:1q8/WwEqZnM/vO4q1gx2g7lHYmyN+o4P7G6EW4zKbRQ=
+github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.1.2/go.mod h1:owKRexW+Ir5ACD2UTesmjkQ+w7mcmknLNfwOiKfVLTg=
 github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.17 h1:xOLELNKGp2vsiteLsvLPwxC+mYmO6OZ8PYgiuPJzF8U=
 github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.17/go.mod h1:5M5CI3D12dNOtH3/mk6minaRwI2/37ifCURZISxA/IQ=
 github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.17 h1:WWLqlh79iO48yLkj1v3ISRNiv+3KdQoZ6JWyfcsyQik=
diff --git a/s3.go b/s3.go
index eb57524..a194263 100644
--- a/s3.go
+++ b/s3.go
@@ -8,13 +8,13 @@ import (
 	"github.com/aws/aws-sdk-go-v2/aws"
 	v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
 	"github.com/aws/aws-sdk-go-v2/config"
-	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
+	"github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
-// Uploader is the interface for uploading objects to S3 using the upload manager
+// Uploader is the interface for uploading objects to S3 using the transfer manager
 type Uploader interface {
-	Upload(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error)
+	UploadObject(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error)
 }
 
 // DirectUploader is the interface for uploading objects directly to S3
@@ -45,7 +45,7 @@ func (s *S3) Store(path string, content io.Reader, contentType string) (string,
 }
 
 func (s *S3) storeWithManager(path string, content io.Reader, contentType string) (string, error) {
-	out, err := s.svc.Upload(context.Background(), &s3.PutObjectInput{
+	out, err := s.svc.UploadObject(context.Background(), &transfermanager.UploadObjectInput{
 		Bucket: aws.String(s.bucket),
 		Key:    aws.String(path),
 		Body:   content,
@@ -100,8 +100,8 @@ func New(bucket string) (*S3, error) {
 		return nil, err
 	}
 	client := s3.NewFromConfig(cfg)
-	uploader := manager.NewUploader(client, func(u *manager.Uploader) {
-		u.PartSize = 5 * 1024 * 1024
+	uploader := transfermanager.New(client, func(o *transfermanager.Options) {
+		o.PartSizeBytes = 5 * 1024 * 1024
 	})
 	presignClient := s3.NewPresignClient(client)
 	return &S3{
diff --git a/s3_test.go b/s3_test.go
index 3337f78..2317b71 100644
--- a/s3_test.go
+++ b/s3_test.go
@@ -10,17 +10,17 @@ import (
 
 	"github.com/aws/aws-sdk-go-v2/aws"
 	v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
-	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
+	"github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
 // Mock implementations for testing
 
 type mockUploader struct {
-	uploadFunc func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error)
+	uploadFunc func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error)
 }
 
-func (m *mockUploader) Upload(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+func (m *mockUploader) UploadObject(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 	return m.uploadFunc(ctx, input, opts...)
 }
 
@@ -81,7 +81,7 @@ func TestStore_WithUploadManager_Success(t *testing.T) {
 	expectedURL := "https://s3.amazonaws.com/test-bucket/path/to/file.pdf?presigned=true"
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 			// Verify input parameters
 			if *input.Bucket != testBucket {
 				t.Errorf("Expected bucket %s, got %s", testBucket, *input.Bucket)
@@ -99,7 +99,7 @@ func TestStore_WithUploadManager_Success(t *testing.T) {
 				t.Errorf("Expected content %s, got %s", testContent, string(body))
 			}
 
-			return &manager.UploadOutput{
+			return &transfermanager.UploadObjectOutput{
 				Key: aws.String(testPath),
 			}, nil
 		},
@@ -149,7 +149,7 @@ func TestStore_WithUploadManager_UploadError(t *testing.T) {
 	expectedError := errors.New("upload failed")
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
 			return nil, expectedError
 		},
 	}
@@ -191,8 +191,8 @@ func TestStore_WithUploadManager_PresignError(t *testing.T) {
 	expectedError := errors.New("presign failed")
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
-			return &manager.UploadOutput{
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
+			return &transfermanager.UploadObjectOutput{
 				Key: aws.String(testPath),
 			}, nil
 		},
@@ -390,8 +390,8 @@ func TestStore_PresignExpiry(t *testing.T) {
 	var capturedExpiry time.Duration
 
 	mockUploader := &mockUploader{
-		uploadFunc: func(ctx context.Context, input *s3.PutObjectInput, opts ...func(*manager.Uploader)) (*manager.UploadOutput, error) {
-			return &manager.UploadOutput{Key: aws.String(testPath)}, nil
+		uploadFunc: func(ctx context.Context, input *transfermanager.UploadObjectInput, opts ...func(*transfermanager.Options)) (*transfermanager.UploadObjectOutput, error) {
+			return &transfermanager.UploadObjectOutput{Key: aws.String(testPath)}, nil
 		},
 	}