diff --git a/Cargo.toml b/Cargo.toml
index 204062e..ed5afb1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ categories = ["no-std"]
 license = "Apache-2.0 WITH LLVM-exception"
 repository = "https://github.com/bytecodealliance/target-lexicon"
 edition = "2018"
+include = ["Cargo.toml", "README.md", "LICENSE", "build.rs", "src/**/*.rs"]
 
 [dependencies]
 serde = { version = "1.0", optional = true }