diff --git a/README.md b/README.md
index 782dc2c0d0db6c46b05590519dd3fdf3411b33f1..fda19ac1233f1117b721870667f958556e4f94e7 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ This project's static Pages are built by [GitLab CI][ci], following the steps
 defined in [`.gitlab-ci.yml`](.gitlab-ci.yml):
 
 ```
-image: python:alpine
+image: python:3.8-buster
 
 before_script:
   - pip install mkdocs