diff --git a/clients/cmd/fluentd/Dockerfile b/clients/cmd/fluentd/Dockerfile
index b9bc8f4740fcc..a3566beebe934 100644
--- a/clients/cmd/fluentd/Dockerfile
+++ b/clients/cmd/fluentd/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.3.6 AS build
+FROM ruby:3.4.1 AS build
 
 ENV DEBIAN_FRONTEND=noninteractive