diff --git a/build_system/Cargo.toml b/build_system/Cargo.toml
index d2600ed5a03..d4b09c4f4fc 100644
--- a/build_system/Cargo.toml
+++ b/build_system/Cargo.toml
@@ -3,6 +3,10 @@ name = "y"
 version = "0.1.0"
 edition = "2021"
 
+[features]
+master = []
+default = ["master"]
+
 [dependencies]
 boml = "0.3.1"