diff --git a/api/.ruby-version b/api/.ruby-version
index b347b11ea..619b53766 100644
--- a/api/.ruby-version
+++ b/api/.ruby-version
@@ -1 +1 @@
-3.2.3
+3.3.3
diff --git a/api/Dockerfile b/api/Dockerfile
index 4a50dc877..f01273dca 100644
--- a/api/Dockerfile
+++ b/api/Dockerfile
@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1
-FROM ruby:3.2.3
+FROM ruby:3.3.3
 RUN apt-get update -qq && apt-get -y install mariadb-client
 
 LABEL org.opencontainers.image.source https://github.com/dodona-edu/dolos
diff --git a/api/Gemfile b/api/Gemfile
index e6e6f34ff..b5c3204d8 100644
--- a/api/Gemfile
+++ b/api/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '3.2.3'
+ruby '3.3.3'
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem 'rails', '~> 7.1.3', '>= 7.1.3.3'
diff --git a/api/Gemfile.lock b/api/Gemfile.lock
index 318563e35..dbe0a043f 100644
--- a/api/Gemfile.lock
+++ b/api/Gemfile.lock
@@ -334,7 +334,7 @@ DEPENDENCIES
   tzinfo-data
 
 RUBY VERSION
-   ruby 3.2.3p157
+   ruby 3.3.3p89
 
 BUNDLED WITH
    2.3.26