diff --git a/backend/rustfmt.toml b/backend/rustfmt.toml
new file mode 100644
index 0000000..5cf55b7
--- /dev/null
+++ b/backend/rustfmt.toml
@@ -0,0 +1,3 @@
+unstable_features = true
+group_imports = "StdExternalCrate"
+imports_granularity = "Module"
diff --git a/provisioning/shell.nix b/provisioning/shell.nix
index 54ae55a..1179fd7 100644
--- a/provisioning/shell.nix
+++ b/provisioning/shell.nix
@@ -6,6 +6,6 @@ pkgs.mkShell {
     pkgs.cargo-edit
     pkgs.rustc
     pkgs.rust-analyzer
-    pkgs.rustfmt
+    (pkgs.rustfmt.override { asNightly = true; })
   ];
 }