diff --git a/.gitignore b/.gitignore
index 54366f7037..e0a0f13f43 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,4 +38,7 @@ license-list.txt
 
 # grpc compiler
 compiler/gradle.properties
-compiler/build/*
\ No newline at end of file
+compiler/build/*
+
+# protobuf
+dubbo-serialization/dubbo-serialization-protobuf/build/*
\ No newline at end of file