diff --git a/.drone.yml b/.drone.yml
index f0f93c2..c4e4067 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -28,7 +28,7 @@ steps:
     - name: deps
       path: /nix/store
   commands:
-    - nix build --argstr version ${DRONE_TAG} --argstr rev ${DRONE_COMMIT} .#image
+    - nix --extra-experimental-features nix-command build --argstr version ${DRONE_TAG} --argstr rev ${DRONE_COMMIT} .#image
 
 - name: publish
   image: docker:dind
@@ -87,6 +87,6 @@ services:
 
 ---
 kind: signature
-hmac: 29d146340f366a0b0a1a104df3b9b703e483a35d94cc134f0050f10c306b8f85
+hmac: d7661646dc7a9b4c508940b7fdd99a807ff5c405b1f79cf756f54343b9b35106
 
 ...