diff --git a/crates/grep/Cargo.toml b/crates/grep/Cargo.toml
index fceddba2..5e9fd997 100644
--- a/crates/grep/Cargo.toml
+++ b/crates/grep/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/BurntSushi/ripgrep/tree/master/crates/grep"
 readme = "README.md"
 keywords = ["regex", "grep", "egrep", "search", "pattern"]
 license = "Unlicense OR MIT"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 grep-cli = { version = "0.1.7", path = "../cli" }