diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1120b20..6db7f0a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,6 @@ jobs:
           ruby-version: 2.7
           bundler-cache: true # 'bundle install' and cache
         env:
-          BUNDLE_WITHOUT: "development:test"
           BUNDLE_WITH: lint
 
       - name: Rubocop
@@ -34,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.5', '2.6', '2.7']
+        ruby: [ '2.6', '2.7', '3.0', '3.1' ]
 
     steps:
       - uses: actions/checkout@v1
diff --git a/.rubocop.yml b/.rubocop.yml
index ce1fec6..69e9d74 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -4,7 +4,9 @@ require:
 AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.6
+  NewCops: enable
+  SuggestExtensions: false
 
 Style/DoubleNegation:
   Enabled: false
diff --git a/Gemfile b/Gemfile
index 1029c25..28ba547 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,10 +5,9 @@ source 'https://rubygems.org'
 gemspec
 
 # Required gems to run all Faraday tests
-gem 'multipart-parser'
 
 group :lint, :development do
-  gem 'rubocop', '~> 0.91.1'
+  gem 'rubocop', '~> 1.37'
   gem 'rubocop-packaging', '~> 0.5'
   gem 'rubocop-performance', '~> 1.0'
 end
diff --git a/faraday-http.gemspec b/faraday-http.gemspec
index 07d9898..8b0d221 100644
--- a/faraday-http.gemspec
+++ b/faraday-http.gemspec
@@ -15,16 +15,17 @@ Gem::Specification.new do |spec|
   spec.homepage      = 'https://github.com/lostisland/faraday-http'
   spec.license       = 'MIT'
 
-  spec.required_ruby_version = '>= 2.5'
+  spec.required_ruby_version = '>= 2.6'
 
   spec.metadata['homepage_uri'] = spec.homepage
   spec.metadata['source_code_uri'] = 'https://github.com/lostisland/faraday-http'
   spec.metadata['changelog_uri'] = 'https://github.com/lostisland/faraday-http/releases'
+  spec.metadata['rubygems_mfa_required'] = 'true'
 
   spec.files = Dir.glob('lib/**/*') + %w[README.md LICENSE]
   spec.require_paths = ['lib']
 
-  spec.add_dependency 'faraday', '~> 1.0'
+  spec.add_dependency 'faraday', '~> 2.5'
   spec.add_dependency 'http', '>= 4.0', '< 6'
 
   spec.add_development_dependency 'bundler', '~> 2.0'
diff --git a/lib/faraday/adapter/http.rb b/lib/faraday/adapter/http.rb
index 9fe59e4..21fa410 100644
--- a/lib/faraday/adapter/http.rb
+++ b/lib/faraday/adapter/http.rb
@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
+require 'http'
+
 module Faraday
   class Adapter
     # HTTP.rb adapter.
     class HTTP < Faraday::Adapter
-      dependency 'http'
-
       # Takes the environment and performs the request.
       #
       # @param env [Faraday::Env] the request environment.
@@ -20,13 +20,22 @@ def call(env)
       private
 
       def perform_request(env)
-        conn = setup_connection(env)
+        connection = setup_connection(env)
 
-        resp = conn.request env[:method], env[:url],
-                            body: env[:body],
-                            ssl_context: ssl_context(env[:ssl])
+        response = connection.request env[:method], env[:url],
+                                      body: env[:body],
+                                      ssl_context: ssl_context(env[:ssl])
+
+        if env.stream_response?
+          env.stream_response do |&on_data|
+            request_with_wrapped_block(response, env, &on_data)
+          end
+          body = ''
+        else
+          body = response.body.to_s
+        end
 
-        save_response(env, resp.code, resp.body.to_s, resp.headers, resp.status.reason)
+        save_response(env, response.code, body, response.headers, response.status.reason)
       rescue ::HTTP::TimeoutError
         raise Faraday::TimeoutError, $ERROR_INFO
       rescue ::HTTP::ConnectionError
@@ -37,6 +46,14 @@ def perform_request(env)
         raise
       end
 
+      def request_with_wrapped_block(response, env)
+        return unless block_given?
+
+        while (chunk = response.body.readpartial)
+          yield(chunk, env)
+        end
+      end
+
       def setup_connection(env)
         conn = ::HTTP
 
@@ -97,27 +114,19 @@ def ssl_context(ssl)
       end
 
       def ssl_client_cert(cert)
-        case cert
-        when NilClass then nil
-        when String
-          OpenSSL::X509::Certificate.new(File.read(cert))
-        when OpenSSL::X509::Certificate
-          cert
-        else
-          raise Faraday::Error, "invalid ssl.client_cert: #{cert.inspect}"
-        end
+        return nil if cert.nil?
+        return OpenSSL::X509::Certificate.new(File.read(cert)) if cert.is_a(String)
+        return cert if cert.is_a?(OpenSSL::X509::Certificate)
+
+        raise Faraday::Error, "invalid ssl.client_cert: #{cert.inspect}"
       end
 
       def ssl_client_key(cert)
-        case cert
-        when NilClass then nil
-        when String
-          OpenSSL::PKey::RSA.new(File.read(cert))
-        when OpenSSL::PKey::RSA, OpenSSL::PKey::DSA
-          cert
-        else
-          raise Faraday::Error, "invalid ssl.client_key: #{cert.inspect}"
-        end
+        return nil if cert.nil?
+        return OpenSSL::PKey::RSA.new(File.read(cert)) if cert.is_a(String)
+        return cert if cert.is_a?(OpenSSL::PKey::RSA, OpenSSL::PKey::DSA)
+
+        raise Faraday::Error, "invalid ssl.client_key: #{cert.inspect}"
       end
     end
   end
diff --git a/lib/faraday/http/version.rb b/lib/faraday/http/version.rb
index fd6a231..46c0bbd 100644
--- a/lib/faraday/http/version.rb
+++ b/lib/faraday/http/version.rb
@@ -2,6 +2,6 @@
 
 module Faraday
   module Http
-    VERSION = '1.1.0'
+    VERSION = '2.0.0'
   end
 end
diff --git a/spec/faraday/http/adapter_spec.rb b/spec/faraday/http/adapter_spec.rb
index 133d71b..02df5e9 100644
--- a/spec/faraday/http/adapter_spec.rb
+++ b/spec/faraday/http/adapter_spec.rb
@@ -2,7 +2,7 @@
 
 RSpec.describe Faraday::Adapter::HTTP do
   features :request_body_on_query_methods, :reason_phrase_parse, :trace_method, :connect_method,
-           :skip_response_body_on_head, :local_socket_binding
+           :skip_response_body_on_head, :local_socket_binding, :streaming
 
   it_behaves_like 'an adapter'
 
@@ -20,10 +20,9 @@
 
   let(:conn) do
     conn_options[:ssl] ||= {}
-    conn_options[:ssl][:ca_file] ||= ENV['SSL_FILE']
+    conn_options[:ssl][:ca_file] ||= ENV.fetch('SSL_FILE', nil)
 
     Faraday.new(remote, conn_options) do |conn|
-      conn.request :multipart
       conn.request :url_encoded
       conn.response :raise_error
       conn.adapter described_class, *adapter_options