diff --git a/Gemfile b/Gemfile
index 92e6e3933..faf5accc3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,6 @@ group :test, :development do
   gem 'coveralls_reborn', require: false
   gem 'em-http-request', '>= 1.1', require: 'em-http'
   gem 'em-synchrony', '>= 1.0.3', require: %w[em-synchrony em-synchrony/em-http]
-  gem 'excon', '>= 0.27.4'
   gem 'httpclient', '>= 2.2'
   gem 'multipart-parser'
   gem 'patron', '>= 0.4.2', platforms: :ruby
diff --git a/faraday.gemspec b/faraday.gemspec
index 12e6bd137..260234aaa 100644
--- a/faraday.gemspec
+++ b/faraday.gemspec
@@ -15,6 +15,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.4'
 
+  spec.add_dependency 'faraday-excon', '~> 1.0'
   spec.add_dependency 'faraday-net_http', '~> 1.0'
   spec.add_dependency 'faraday-net_http_persistent', '~> 1.0'
   spec.add_dependency 'multipart-post', '>= 1.2', '< 3'
diff --git a/lib/faraday.rb b/lib/faraday.rb
index 8a6b7750a..d376b92e4 100644
--- a/lib/faraday.rb
+++ b/lib/faraday.rb
@@ -28,6 +28,8 @@
 require 'faraday/param_part'
 
 require 'faraday/net_http'
+require 'faraday/net_http_persistent'
+require 'faraday/excon'
 
 # This is the main namespace for Faraday.
 #
diff --git a/lib/faraday/adapter.rb b/lib/faraday/adapter.rb
index 395786691..f48cfde29 100644
--- a/lib/faraday/adapter.rb
+++ b/lib/faraday/adapter.rb
@@ -11,15 +11,10 @@ class Adapter
 
     register_middleware File.expand_path('adapter', __dir__),
                         test: [:Test, 'test'],
-                        net_http_persistent: [
-                          :NetHttpPersistent,
-                          'net_http_persistent'
-                        ],
                         typhoeus: [:Typhoeus, 'typhoeus'],
                         patron: [:Patron, 'patron'],
                         em_synchrony: [:EMSynchrony, 'em_synchrony'],
                         em_http: [:EMHttp, 'em_http'],
-                        excon: [:Excon, 'excon'],
                         rack: [:Rack, 'rack'],
                         httpclient: [:HTTPClient, 'httpclient']
 
diff --git a/lib/faraday/adapter/excon.rb b/lib/faraday/adapter/excon.rb
deleted file mode 100644
index 7febdf927..000000000
--- a/lib/faraday/adapter/excon.rb
+++ /dev/null
@@ -1,124 +0,0 @@
-# frozen_string_literal: true
-
-module Faraday
-  class Adapter
-    # Excon adapter.
-    class Excon < Faraday::Adapter
-      dependency 'excon'
-
-      def build_connection(env)
-        opts = opts_from_env(env)
-        ::Excon.new(env[:url].to_s, opts.merge(@connection_options))
-      end
-
-      def call(env)
-        super
-
-        req_opts = {
-          method: env[:method].to_s.upcase,
-          headers: env[:request_headers],
-          body: read_body(env)
-        }
-
-        req = env[:request]
-        if req&.stream_response?
-          total = 0
-          req_opts[:response_block] = lambda do |chunk, _remain, _total|
-            req.on_data.call(chunk, total += chunk.size)
-          end
-        end
-
-        resp = connection(env) { |http| http.request(req_opts) }
-        save_response(env, resp.status.to_i, resp.body, resp.headers,
-                      resp.reason_phrase)
-
-        @app.call(env)
-      rescue ::Excon::Errors::SocketError => e
-        raise Faraday::TimeoutError, e if e.message.match?(/\btimeout\b/)
-
-        raise Faraday::SSLError, e if e.message.match?(/\bcertificate\b/)
-
-        raise Faraday::ConnectionFailed, e
-      rescue ::Excon::Errors::Timeout => e
-        raise Faraday::TimeoutError, e
-      end
-
-      # TODO: support streaming requests
-      def read_body(env)
-        env[:body].respond_to?(:read) ? env[:body].read : env[:body]
-      end
-
-      private
-
-      def opts_from_env(env)
-        opts = {}
-        amend_opts_with_ssl!(opts, env[:ssl]) if needs_ssl_settings?(env)
-
-        if (req = env[:request])
-          amend_opts_with_timeouts!(opts, req)
-          amend_opts_with_proxy_settings!(opts, req)
-        end
-
-        opts
-      end
-
-      def needs_ssl_settings?(env)
-        env[:url].scheme == 'https' && env[:ssl]
-      end
-
-      OPTS_KEYS = [
-        %i[client_cert client_cert],
-        %i[client_key client_key],
-        %i[certificate certificate],
-        %i[private_key private_key],
-        %i[ssl_ca_path ca_path],
-        %i[ssl_ca_file ca_file],
-        %i[ssl_version version],
-        %i[ssl_min_version min_version],
-        %i[ssl_max_version max_version]
-      ].freeze
-
-      def amend_opts_with_ssl!(opts, ssl)
-        opts[:ssl_verify_peer] = !!ssl.fetch(:verify, true)
-        # https://github.com/geemus/excon/issues/106
-        # https://github.com/jruby/jruby-ossl/issues/19
-        opts[:nonblock] = false
-
-        OPTS_KEYS.each do |(key_in_opts, key_in_ssl)|
-          next unless ssl[key_in_ssl]
-
-          opts[key_in_opts] = ssl[key_in_ssl]
-        end
-      end
-
-      def amend_opts_with_timeouts!(opts, req)
-        if (sec = request_timeout(:read, req))
-          opts[:read_timeout] = sec
-        end
-
-        if (sec = request_timeout(:write, req))
-          opts[:write_timeout] = sec
-        end
-
-        return unless (sec = request_timeout(:open, req))
-
-        opts[:connect_timeout] = sec
-      end
-
-      def amend_opts_with_proxy_settings!(opts, req)
-        opts[:proxy] = proxy_settings_for_opts(req[:proxy]) if req[:proxy]
-      end
-
-      def proxy_settings_for_opts(proxy)
-        {
-          host: proxy[:uri].host,
-          hostname: proxy[:uri].hostname,
-          port: proxy[:uri].port,
-          scheme: proxy[:uri].scheme,
-          user: proxy[:user],
-          password: proxy[:password]
-        }
-      end
-    end
-  end
-end
diff --git a/lib/faraday/autoload.rb b/lib/faraday/autoload.rb
index 61b93ac13..4c14ceec2 100644
--- a/lib/faraday/autoload.rb
+++ b/lib/faraday/autoload.rb
@@ -58,12 +58,10 @@ def all_loaded_constants
   class Adapter
     extend AutoloadHelper
     autoload_all 'faraday/adapter',
-                 NetHttpPersistent: 'net_http_persistent',
                  EMSynchrony: 'em_synchrony',
                  EMHttp: 'em_http',
                  Typhoeus: 'typhoeus',
                  Patron: 'patron',
-                 Excon: 'excon',
                  Test: 'test',
                  Rack: 'rack',
                  HTTPClient: 'httpclient'