diff --git a/Dockerfile b/Dockerfile
index dedde1c15c2d..371c1a730863 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 # check=skip=InvalidBaseImagePlatform
 
-ARG ALPINE_VERSION=3.20
+ARG ALPINE_VERSION=3.21
 ARG GO_VERSION=1.23
 ARG HTMLTEST_VERSION=0.17.0
 ARG HUGO_VERSION=0.139.0
@@ -9,7 +9,7 @@ ARG NODE_VERSION=22
 ARG PAGEFIND_VERSION=1.1.1
 
 # base defines the generic base stage
-FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS base
+FROM golang:${GO_VERSION}-alpine AS base
 RUN apk add --no-cache \
     git \
     nodejs \
diff --git a/hugo.yaml b/hugo.yaml
index beb30822aafb..79c32f5e5e1b 100644
--- a/hugo.yaml
+++ b/hugo.yaml
@@ -114,7 +114,7 @@ params:
   buildkit_version: "0.16.0"
 
   example_go_version: "1.23"
-  example_alpine_version: "3.20"
+  example_alpine_version: "3.21"
   example_node_version: "20"
 
   min_version_thresholds: