diff --git a/cmd/update.go b/cmd/update.go
index 5239ee4d1..3b620ea83 100644
--- a/cmd/update.go
+++ b/cmd/update.go
@@ -33,6 +33,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	xhttp "github.com/minio/minio/internal/http"
@@ -515,7 +516,14 @@ func getUpdateReaderFromURL(u *url.URL, transport http.RoundTripper, mode string
 	return resp.Body, nil
 }
 
+var updateInProgress uint32
+
 func doUpdate(u *url.URL, lrTime time.Time, sha256Sum []byte, releaseInfo string, mode string) (err error) {
+	if !atomic.CompareAndSwapUint32(&updateInProgress, 0, 1) {
+		return errors.New("update already in progress")
+	}
+	defer atomic.StoreUint32(&updateInProgress, 0)
+
 	transport := getUpdateTransport(30 * time.Second)
 	var reader io.ReadCloser
 	if u.Scheme == "https" || u.Scheme == "http" {