diff --git a/Dockerfile b/Dockerfile
index 1a10fdb3bd910708efeaf1c08fab2f5df757aebd..b444c054df79f7902c1bdcb74d77792d82965aa8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
+# renovate: datasource=docker depName=registry.docker.com/library/ruby
 ARG RUBY_VERSION=3.3.6
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim AS base
 
diff --git a/renovate.json b/renovate.json
index 3026d2258998d8f62abe0bfebf728139cd8640c4..7310555d5858665037833ce531fad8d39221fcb8 100644
--- a/renovate.json
+++ b/renovate.json
@@ -16,7 +16,7 @@
         "mcr.microsoft.com/devcontainers/ruby",
         "registry.docker.com/library/ruby"
       ],
-      "groupName": "ruby-updates"
+      "groupName": "ruby"
     }
   ]
 }