diff --git a/common/version/version.go b/common/version/version.go
index c034a6d90a..3d1db6da11 100644
--- a/common/version/version.go
+++ b/common/version/version.go
@@ -5,7 +5,7 @@ import (
 	"runtime/debug"
 )
 
-var tag = "v4.3.20"
+var tag = "v4.3.21"
 
 var commit = func() string {
 	if info, ok := debug.ReadBuildInfo(); ok {