diff --git a/.woodpecker.yml b/.woodpecker.yml
index 5e5a448..2d245ed 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -21,7 +21,7 @@ pipeline:
       event: "push"
 matrix:
   include:
-  - ALPINE_VERSION: "3.18.3"
+  - ALPINE_VERSION: "3.18.4"
     RUBY_VERSION: "3.2"
     RUBY_PATCH: "2"
   - ALPINE_VERSION: "3.17.5"
diff --git a/Dockerfile b/Dockerfile
index bf4f6b9..61b8c3d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-ARG BASE_IMAGE=registry.nulo.in/sutty/ruby
-ARG ALPINE_VERSION=3.13.6
+ARG BASE_IMAGE=gitea.nulo.in/sutty/ruby
+ARG ALPINE_VERSION=3.18.4
 ARG RUBY_VERSION=2.7
 ARG RUBY_PATCH=5
 ARG EMAIL=monit@sutty.nl