diff --git a/.woodpecker.yml b/.woodpecker.yml
index 0724141..205f46b 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -7,7 +7,6 @@ steps:
       repo: "gitea.nulo.in/sutty/certbot"
       tags:
       - "${ALPINE_VERSION}"
-      - "latest"
       build_args:
       - "ALPINE_VERSION=${ALPINE_VERSION}"
       - "BASE_IMAGE=gitea.nulo.in/sutty/monit"
@@ -18,5 +17,6 @@ steps:
       event: "push"
 matrix:
   include:
+  - ALPINE_VERSION: "3.21.0"
   - ALPINE_VERSION: "3.20.3"
   - ALPINE_VERSION: "3.19.4"