diff --git a/Dockerfile b/Dockerfile
index 8e93dbf..e0cd39b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/alpine:3.21.2
+FROM docker.io/library/alpine:3.21.3
 
 RUN apk add bind-tools curl iputils