diff --git a/Cargo.toml b/Cargo.toml
index 92be239..0e80f59 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ name = "untrusted"
 readme = "README.md"
 repository = "https://github.com/briansmith/untrusted"
 version = "0.9.0"
+include = ["Cargo.toml", "README.md", "LICENSE.txt", "src/**/*.rs", "tests/**/*.rs"]
 
 [lib]
 name = "untrusted"