diff --git a/.ruby-version b/.ruby-version
index b0f2dcb32..818bd47ab 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.0.4
+3.0.6
diff --git a/Dockerfile b/Dockerfile
index ce7f4d718..160efeea4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # This needs to be bullseye-slim because the Ruby image is built on bullseye-slim
 ARG NODE_VERSION="16.18.1-bullseye-slim"
 
-FROM ghcr.io/moritzheiber/ruby-jemalloc:3.0.4-slim as ruby
+FROM ghcr.io/moritzheiber/ruby-jemalloc:3.0.6-slim as ruby
 FROM node:${NODE_VERSION} as build
 
 COPY --link --from=ruby /opt/ruby /opt/ruby