diff --git a/lib/faraday/request.rb b/lib/faraday/request.rb
index 791fbf83e..19cae6f2a 100644
--- a/lib/faraday/request.rb
+++ b/lib/faraday/request.rb
@@ -44,7 +44,8 @@ class Request < Struct.new(
                           :TokenAuthentication,
                           'token_authentication'
                         ],
-                        instrumentation: [:Instrumentation, 'instrumentation']
+                        instrumentation: [:Instrumentation, 'instrumentation'],
+                        json: [:Json, 'json']
 
     # @param request_method [String]
     # @yield [request] for block customization, if block given
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 402b5f089..d58869849 100644
--- a/lib/faraday/response.rb
+++ b/lib/faraday/response.rb
@@ -22,7 +22,8 @@ def on_complete(env)
 
     register_middleware File.expand_path('response', __dir__),
                         raise_error: [:RaiseError, 'raise_error'],
-                        logger: [:Logger, 'logger']
+                        logger: [:Logger, 'logger'],
+                        json: [:Json, 'json']
 
     def initialize(env = nil)
       @env = Env.from(env) if env
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)