diff --git a/.drone.yml b/.drone.yml
index 9937a8e..44d00ce 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -5,6 +5,13 @@ type: docker
 name: default
 
 steps:
+  - name: check code style
+    image: python:3.11-alpine
+    commands:
+      - pip install black isort
+      - black --check .
+      - isort --check .
+
   - name: build only
     image: plugins/docker
     settings: