diff --git a/.drone.yml b/.drone.yml
index db26270..64deee4 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,14 +4,14 @@ type: docker
 
 steps:
   - name: lint
-    image: python:3.11.2
+    image: python:3.11.3
     commands:
       - pip install poetry
       - poetry install
       - poetry run flake8
       - poetry run mypy .
   - name: epub
-    image: python:3.11.2
+    image: python:3.11.3
     commands:
       - pip install poetry
       - poetry install --without dev