diff --git a/Cargo.toml b/Cargo.toml
index 8e2ab43f56..84c782d030 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@
 [workspace]
 
 [package]
-edition = "2018"
+edition = "2021"
 name = "zerocopy"
 version = "0.8.0"
 authors = ["Joshua Liebow-Feeser <joshlf@google.com>"]
diff --git a/zerocopy-derive/Cargo.toml b/zerocopy-derive/Cargo.toml
index d9608c05f7..35eb53dd14 100644
--- a/zerocopy-derive/Cargo.toml
+++ b/zerocopy-derive/Cargo.toml
@@ -7,7 +7,7 @@
 # those terms.
 
 [package]
-edition = "2018"
+edition = "2021"
 name = "zerocopy-derive"
 version = "0.8.0"
 authors = ["Joshua Liebow-Feeser <joshlf@google.com>"]