diff --git a/.rustfmt.toml b/.rustfmt.toml
index e4f858c7..0d7adea5 100644
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -26,7 +26,7 @@ use_try_shorthand = true
 
 # Set the default settings again to always apply the proper formatting without
 # being affected by the editor settings.
-edition = "2018"
+edition = "2021"
 hard_tabs = false
 newline_style = "Unix"
 tab_spaces = 4