diff --git a/.github/workflows/7.17.yml b/.github/workflows/7.17.yml
index e24a85e97d..7cf04c4930 100644
--- a/.github/workflows/7.17.yml
+++ b/.github/workflows/7.17.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.0', '3.1', '3.2', 'jruby-9.3', 'jruby-9.4' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3', 'jruby-9.3', 'jruby-9.4' ]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
diff --git a/elasticsearch-transport/elasticsearch-transport.gemspec b/elasticsearch-transport/elasticsearch-transport.gemspec
index 12e10a1172..a8c23780a9 100644
--- a/elasticsearch-transport/elasticsearch-transport.gemspec
+++ b/elasticsearch-transport/elasticsearch-transport.gemspec
@@ -44,6 +44,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 2.4'
 
+  s.add_dependency 'base64'
   s.add_dependency 'multi_json'
   s.add_dependency 'faraday', '>= 1', '< 3'
 
diff --git a/elasticsearch/spec/integration/characters_escaping_spec.rb b/elasticsearch/spec/integration/characters_escaping_spec.rb
index c53c258bfb..c58e1addf3 100644
--- a/elasticsearch/spec/integration/characters_escaping_spec.rb
+++ b/elasticsearch/spec/integration/characters_escaping_spec.rb
@@ -14,6 +14,9 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+
+require 'uri'
+
 ELASTICSEARCH_URL = ENV['TEST_ES_SERVER'] || "http://localhost:#{(ENV['PORT'] || 9200)}"
 raise URI::InvalidURIError unless ELASTICSEARCH_URL =~ /\A#{URI::DEFAULT_PARSER.make_regexp}\z/