diff --git a/aarch64/Cargo.toml b/aarch64/Cargo.toml
index c6235458d1..2105c1ce83 100644
--- a/aarch64/Cargo.toml
+++ b/aarch64/Cargo.toml
@@ -2,6 +2,7 @@
 name = "aarch64"
 version = "0.1.0"
 authors = ["The Chromium OS Authors"]
+edition = "2018"
 
 [dependencies]
 arch = { path = "../arch" }