diff --git a/lib/faraday/request.rb b/lib/faraday/request.rb
index 9a97ba79b..d139727b8 100644
--- a/lib/faraday/request.rb
+++ b/lib/faraday/request.rb
@@ -132,6 +132,7 @@ def to_env(connection)
 
 require 'faraday/request/authorization'
 require 'faraday/request/instrumentation'
+require 'faraday/request/json'
 require 'faraday/request/multipart'
 require 'faraday/request/retry'
 require 'faraday/request/url_encoded'
diff --git a/lib/faraday/request/json.rb b/lib/faraday/request/json.rb
index a17a4dd06..fa219c49d 100644
--- a/lib/faraday/request/json.rb
+++ b/lib/faraday/request/json.rb
@@ -51,3 +51,5 @@ def request_type(env)
     end
   end
 end
+
+Faraday::Request.register_middleware(json: Faraday::Request::Json)
diff --git a/lib/faraday/response.rb b/lib/faraday/response.rb
index 505e4ea43..3dd1bc520 100644
--- a/lib/faraday/response.rb
+++ b/lib/faraday/response.rb
@@ -85,5 +85,6 @@ def apply_request(request_env)
   end
 end
 
+require 'faraday/response/json'
 require 'faraday/response/logger'
 require 'faraday/response/raise_error'
diff --git a/lib/faraday/response/json.rb b/lib/faraday/response/json.rb
index 19fa72047..399b7f351 100644
--- a/lib/faraday/response/json.rb
+++ b/lib/faraday/response/json.rb
@@ -50,3 +50,5 @@ def response_type(env)
     end
   end
 end
+
+Faraday::Response.register_middleware(json: Faraday::Response::Json)