diff --git a/providers/azure/azure.go b/providers/azure/azure.go
index a5f41ed1..66c0e26d 100644
--- a/providers/azure/azure.go
+++ b/providers/azure/azure.go
@@ -295,17 +295,23 @@ func (b *Bucket) Exists(ctx context.Context, name string) (bool, error) {
 }
 
 // Upload the contents of the reader as an object into the bucket.
-func (b *Bucket) Upload(ctx context.Context, name string, r io.Reader) error {
+func (b *Bucket) Upload(ctx context.Context, name string, r io.Reader) (int64, error) {
 	level.Debug(b.logger).Log("msg", "uploading blob", "blob", name)
+	size, err := objstore.TryToGetSize(r)
+	if err != nil {
+		return 0, errors.Wrapf(err, "failed to get size apriori to upload %s", name)
+	}
+
 	blobClient := b.containerClient.NewBlockBlobClient(name)
 	opts := &blockblob.UploadStreamOptions{
 		BlockSize:   3 * 1024 * 1024,
 		Concurrency: 4,
 	}
+
 	if _, err := blobClient.UploadStream(ctx, r, opts); err != nil {
-		return errors.Wrapf(err, "cannot upload Azure blob, address: %s", name)
+		return 0, errors.Wrapf(err, "cannot upload Azure blob, address: %s", name)
 	}
-	return nil
+	return size, nil
 }
 
 // Delete removes the object with the given name.
diff --git a/providers/s3/s3.go b/providers/s3/s3.go
index 5498bb22..ced23439 100644
--- a/providers/s3/s3.go
+++ b/providers/s3/s3.go
@@ -495,7 +495,7 @@ func (b *Bucket) Upload(ctx context.Context, name string, r io.Reader) (int64, e
 	if size < int64(partSize) {
 		partSize = 0
 	}
-	if _, err := b.client.PutObject(
+	resp, err := b.client.PutObject(
 		ctx,
 		b.name,
 		name,
@@ -511,11 +511,12 @@ func (b *Bucket) Upload(ctx context.Context, name string, r io.Reader) (int64, e
 			// TODO(bwplotka): Consider adjusting this number to GOMAXPROCS or to expose this in config if it becomes bottleneck.
 			NumThreads: 4,
 		},
-	); err != nil {
+	)
+	if err != nil {
 		return 0, errors.Wrap(err, "upload s3 object")
 	}
 
-	return size, nil
+	return resp.Size, nil
 }
 
 // Attributes returns information about the specified object.