diff --git a/.rustfmt.toml b/.rustfmt.toml
index 57a2920..fc516e4 100644
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -1,3 +1,4 @@
+edition="2021"
 newline_style = "Unix"
 use_field_init_shorthand = true
 use_small_heuristics = "Max"