diff --git a/bit_field/Cargo.toml b/bit_field/Cargo.toml
index fe8790098f..ac8846ca14 100644
--- a/bit_field/Cargo.toml
+++ b/bit_field/Cargo.toml
@@ -2,6 +2,7 @@
 name = "bit_field"
 version = "0.1.0"
 authors = ["The Chromium OS Authors"]
+edition = "2018"
 
 [dependencies]
 bit_field_derive = { path = "bit_field_derive" }
diff --git a/bit_field/bit_field_derive/Cargo.toml b/bit_field/bit_field_derive/Cargo.toml
index 05d5a36bd3..2946ddb5fc 100644
--- a/bit_field/bit_field_derive/Cargo.toml
+++ b/bit_field/bit_field_derive/Cargo.toml
@@ -2,6 +2,7 @@
 name = "bit_field_derive"
 version = "0.1.0"
 authors = ["The Chromium OS Authors"]
+edition = "2018"
 
 [dependencies]
 syn = "=0.15"