diff --git a/Dockerfile b/Dockerfile
index 9473a0341e..d30222312e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # ------------------------------------------------------------------------------
 # base
 # ------------------------------------------------------------------------------
-FROM ruby:3.4.7-alpine AS base
+FROM ruby:4.0.1-alpine AS base
 
 RUN addgroup -S appgroup && adduser -S appuser -G appgroup