diff --git a/rustfmt.toml b/rustfmt.toml
index 0e405e4c8..ebf4bed4d 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,3 +1,4 @@
+edition = "2021"
 max_width = 100
 wrap_comments = true
 format_strings = true