diff --git a/x86_64/Cargo.toml b/x86_64/Cargo.toml
index 521573b3b4..62f9ed56a7 100644
--- a/x86_64/Cargo.toml
+++ b/x86_64/Cargo.toml
@@ -2,6 +2,7 @@
 name = "x86_64"
 version = "0.1.0"
 authors = ["The Chromium OS Authors"]
+edition = "2018"
 build = "build.rs"
 
 [dependencies]