diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 2f5698f6..6416c686 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -18,8 +18,9 @@ jobs:
           - '3.1'
           - '3.2'
           - '3.3'
+          - '3.4'
           - ruby-head
-          - jruby-9.3.3.0
+          - jruby-9.4.10.0
         include:
           - ruby: ruby-head
             env:
@@ -33,4 +34,3 @@ jobs:
       - run: bundle exec rake
         env:
           LONG_RUN: true
-
diff --git a/roo.gemspec b/roo.gemspec
index c6561c22..e1db16dc 100644
--- a/roo.gemspec
+++ b/roo.gemspec
@@ -23,6 +23,10 @@ Gem::Specification.new do |spec|
     spec.required_ruby_version  = ">= 2.7.0"
   end
 
+  if RUBY_VERSION >= '3.4.0'
+    spec.add_dependency 'base64', '~> 0.2'
+    spec.add_dependency 'csv', '~> 3'
+  end
   spec.add_dependency 'nokogiri', '~> 1'
   spec.add_dependency 'rubyzip', '>= 1.3.0', '< 3.0.0'