diff --git a/etcdserver/api/capability.go b/etcdserver/api/capability.go
index 5e2de58e9..eb34383d7 100644
--- a/etcdserver/api/capability.go
+++ b/etcdserver/api/capability.go
@@ -37,6 +37,7 @@ var (
 		"3.0.0": {AuthCapability: true, V3rpcCapability: true},
 		"3.1.0": {AuthCapability: true, V3rpcCapability: true},
 		"3.2.0": {AuthCapability: true, V3rpcCapability: true},
+		"3.3.0": {AuthCapability: true, V3rpcCapability: true},
 	}
 
 	enableMapMu sync.RWMutex
diff --git a/rafthttp/stream.go b/rafthttp/stream.go
index 9dfe22148..af49c18b1 100644
--- a/rafthttp/stream.go
+++ b/rafthttp/stream.go
@@ -55,6 +55,7 @@ var (
 		"3.0.0": {streamTypeMsgAppV2, streamTypeMessage},
 		"3.1.0": {streamTypeMsgAppV2, streamTypeMessage},
 		"3.2.0": {streamTypeMsgAppV2, streamTypeMessage},
+		"3.3.0": {streamTypeMsgAppV2, streamTypeMessage},
 	}
 )