diff --git a/docs/examples/xslt-guide/Dockerfile b/docs/examples/xslt-guide/Dockerfile
index 413fe3182d1..7cdce721fae 100644
--- a/docs/examples/xslt-guide/Dockerfile
+++ b/docs/examples/xslt-guide/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.17.6
+FROM alpine:3.21.5
 
 RUN apk upgrade --update-cache \
     && apk add ca-certificates curl \