diff --git a/.drone.yml b/.drone.yml
index f49665c..2c85242 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,7 +9,7 @@ steps:
   - name: check formatting
     image: nixpkgs/nix:nixos-22.05
     commands:
-      - nix-shell -p cargo --run "cargo fmt -- --check"
+      - nix run --extra-experimental-features nix-command --extra-experimental-features flakes github:nixos/nixpkgs/nixos-22.05#cargo fmt -- --check
 
   - name: build
     image: nixpkgs/nix:nixos-22.05
@@ -33,6 +33,6 @@ trigger:
 
 ---
 kind: signature
-hmac: c99528a32d4c9f5016e6143e08291c99a8b248880f7dc3ee3550803e16cd28ad
+hmac: 38bfdf1a2cd55171dfdf023936ba2b3caeddd7a836b44a481fd23c7a0291d0ad
 
 ...