diff --git a/Dockerfile b/Dockerfile
index f34721c..709c6bd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/alpine:3.20.3
+FROM docker.io/library/alpine:3.21.0
 
 RUN apk add bind-tools curl iputils