diff --git a/Cargo.toml b/Cargo.toml
index 5cff9d42..21b557b2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,6 @@ documentation = "https://docs.rs/proc-macro2"
 edition = "2018"
 keywords = ["macros", "syn"]
 license = "MIT OR Apache-2.0"
-readme = "README.md"
 repository = "https://github.com/dtolnay/proc-macro2"
 rust-version = "1.31"