diff --git a/.tool-versions b/.tool-versions
index d99a67f..d1436d6 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
-ruby 3.2.2
+ruby 3.3.0
 nodejs 21.6.1
 yarn 1.13.0
diff --git a/Dockerfile b/Dockerfile
index 1ba02d1..229619f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -49,7 +49,12 @@ RUN asdf plugin add ruby \
   && asdf plugin add yarn
 
 COPY --chown=app .tool-versions /home/app/
-RUN asdf install
+# REMOVE ME: Workaround for https://bugs.ruby-lang.org/issues/20085.
+# The RUBY_APPLY_PATCHES var should be removed either when ruby is
+# upgraded to a version >3.3.0 or a newer version of ruby-build is
+# available to asdf-ruby which includes the backported patch to ruby
+# 3.3.0.
+RUN RUBY_APPLY_PATCHES="https://patch-diff.githubusercontent.com/raw/ruby/ruby/pull/9371.diff" asdf install
 
 ENV BUNDLER_VERSION=2.4.10
 RUN gem install bundler --version $BUNDLER_VERSION
diff --git a/Gemfile b/Gemfile
index 315b3df..201b7eb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '3.2.2'
+ruby '3.3.0'
 
 gem 'bootsnap', '>= 1.1.0', require: false
 gem 'coffee-rails', '~> 5.0'