diff --git a/serde_macros/Cargo.toml b/serde_macros/Cargo.toml
index 8a2b0488..62764fdb 100644
--- a/serde_macros/Cargo.toml
+++ b/serde_macros/Cargo.toml
@@ -7,7 +7,7 @@ description = "Macros to auto-generate implementations for the serde framework"
 repository = "https://github.com/serde-rs/serde"
 documentation = "https://github.com/serde-rs/serde"
 keywords = ["serde", "serialization"]
-include = ["Cargo.toml", "src/**/*.rs"]
+include = ["Cargo.toml", "src/**/*.rs", "build.rs"]
 build = "build.rs"
 
 [lib]