diff --git a/rustfmt.toml b/rustfmt.toml
index 8210f34b94..6f92d6dcc0 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,3 +1,4 @@
+edition = "2021"
 max_width = 100
 tab_spaces = 4
 reorder_imports = true