diff --git a/Dockerfile b/Dockerfile
index 467458a..d01abc5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/alpine:3.20
+FROM docker.io/library/alpine:3.21
 
 # renovate: datasource=github-releases depName=helm/helm
 ENV HELM_VERSION=v3.16.3