diff --git a/etcdserver/api/capability.go b/etcdserver/api/capability.go
index ec0d600e8..8b13f4742 100644
--- a/etcdserver/api/capability.go
+++ b/etcdserver/api/capability.go
@@ -40,6 +40,7 @@ var (
 		"3.1.0": {AuthCapability: true, V3rpcCapability: true},
 		"3.2.0": {AuthCapability: true, V3rpcCapability: true},
 		"3.3.0": {AuthCapability: true, V3rpcCapability: true},
+		"3.4.0": {AuthCapability: true, V3rpcCapability: true},
 	}
 
 	enableMapMu sync.RWMutex