diff --git a/Dockerfile b/Dockerfile
index c343c38..f63a372 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,4 @@
-FROM alpine:3.8
-MAINTAINER David Chidell (dchidell@cisco.com)
+FROM alpine:3.21
 
 RUN apk --no-cache add net-snmp
 ADD mibs.tar.gz /mibs/