diff --git a/Dockerfile b/Dockerfile
index 3047ff5..582c85b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # https://hub.docker.com/r/jenkins/inbound-agent/tags
 
 
-FROM jenkins/inbound-agent:alpine-jdk17@sha256:38484c0f035a57b3cab5838468fb6c5c2b3f3051e7a2c8b39c99a30823f393ce
+FROM jenkins/inbound-agent:alpine-jdk21@sha256:5bbf84cbe7ce45478c8528fb9a30c8720b7d228b38f26150ab9c605ac02bc44b
 
 ARG BUILDUSER=jenkins