diff --git a/rustfmt.toml b/rustfmt.toml
index 0e3c8464..5965e7c0 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -2,7 +2,7 @@ edition = "2021"
 max_width = 100
 tab_spaces = 4
 hard_tabs = false
-imports_granularity = "Crate"
-group_imports = "StdExternalCrate"
 reorder_imports = true
 newline_style = "Unix"
+# imports_granularity / group_imports are nightly-only; re-enable when toolchain pin moves to nightly
+# (kept as "future" comment for codebase to stay aware of intended import style)