diff --git a/tools/sftd_disco/Dockerfile b/tools/sftd_disco/Dockerfile
index 011aac9c6a1..69b0fa8f7e6 100644
--- a/tools/sftd_disco/Dockerfile
+++ b/tools/sftd_disco/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21.3
+FROM alpine:3.23.4
 
 RUN apk add --no-cache curl bash openssl bind-tools jq