diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.0.1 (27 Sep 2017)
+
+* Update documentation links
+
 ## 4.0.0 (19 Sep 2017)
 
 * Use the latest Stack resolver 9.5
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,13 +1,13 @@
-# line [!['travis-ci/noraesae/line](https://travis-ci.org/noraesae/line.svg?branch=master)](https://travis-ci.org/noraesae/line)
+# line [!['travis-ci/utatti/line](https://travis-ci.org/utatti/line.svg?branch=master)](https://travis-ci.org/utatti/line)
 
 Haskell SDK for the [LINE](https://line.me) API
 
 ## Features
 
-* Internal [auth signature validator](https://devdocs.line.me/en/#webhook-authentication)
+* Internal [auth signature validator](https://developers.line.me/en/docs/messaging-api/reference/#signature-validation)
 * Webhook handled with handler function, [WAI](https://hackage.haskell.org/package/wai) application,
   or [Scotty](https://hackage.haskell.org/package/scotty) action
-* Functions and types for [LINE Messaging API](https://devdocs.line.me/en/#messaging-api)
+* Functions and types for [LINE Messaging API](https://developers.line.me/en/docs/messaging-api/reference/)
 
 ## Documentation
 
diff --git a/line.cabal b/line.cabal
--- a/line.cabal
+++ b/line.cabal
@@ -1,7 +1,7 @@
 name:                line
-version:             4.0.0
+version:             4.0.1
 synopsis:            Haskell SDK for the LINE API
-homepage:            https://github.com/noraesae/line
+homepage:            https://github.com/utatti/line
 license:             BSD3
 license-file:        LICENSE
 author:              Jun
@@ -23,10 +23,10 @@
   .
   * Webhook handled with handler function, WAI application, or Scotty action
   .
-  * Functions and types for <https://devdocs.line.me/en/#messaging-api LINE Messaging API>
+  * Functions and types for <https://developers.line.me/en/docs/messaging-api/reference/>
   .
   For example usages, please see the
-  <https://github.com/noraesae/line/tree/master/examples examples> directory.
+  <https://github.com/utatti/line/tree/master/examples examples> directory.
 
 library
   hs-source-dirs:      src
@@ -85,4 +85,4 @@
 
 source-repository head
   type:     git
-  location: https://github.com/noraesae/line
+  location: https://github.com/utatti/line
diff --git a/src/Line/Messaging/API.hs b/src/Line/Messaging/API.hs
--- a/src/Line/Messaging/API.hs
+++ b/src/Line/Messaging/API.hs
@@ -3,7 +3,7 @@
 one on one.
 
 For more details about the APIs themselves, please refer to the
-<https://devdocs.line.me/en/#messaging-api API references>.
+<https://developers.line.me/en/docs/messaging-api/reference/ API references>.
 -}
 
 module Line.Messaging.API (
@@ -111,7 +111,7 @@
 -- a group, specified by 'ID'.
 --
 -- A 'Message' represents a message object. For types of the message object,
--- please refer to the <https://devdocs.line.me/en/#send-message-object Send message object>
+-- please refer to the <https://developers.line.me/en/docs/messaging-api/reference/#message-objects Send message object>
 -- section of the LINE documentation.
 --
 -- An example usage of 'Message' is like below:
@@ -129,7 +129,7 @@
 -- @
 --
 -- For more information about the API, please refer to
--- <https://devdocs.line.me/en/#push-message the API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#send-push-message the API reference>.
 push :: ID -> [Message] -> APIIO ()
 push id' ms = do
   let url = "https://api.line.me/v2/bot/message/push"
@@ -143,7 +143,7 @@
 -- Messages cannot be sent to groups or rooms.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#multicast its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#send-multicast-messages its API reference>.
 multicast :: [ID] -> [Message] -> APIIO ()
 multicast ids ms = do
   let url = "https://api.line.me/v2/bot/message/multicast"
@@ -159,7 +159,7 @@
 -- <./Line-Messaging-Webhook-Types.html#t:ReplyableEvent replyable events> on a webhook server.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#reply-message its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#send-reply-message its API reference>.
 reply :: ReplyToken -> [Message] -> APIIO ()
 reply replyToken ms = do
   let url = "https://api.line.me/v2/bot/message/reply"
@@ -176,7 +176,7 @@
 -- 'getContent' to downloaded the content only when it is really needed.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#get-content its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#get-content its API reference>.
 getContent :: ID -> APIIO BL.ByteString
 getContent id' = do
   let url = concat [ "https://api.line.me/v2/bot/message/"
@@ -190,7 +190,7 @@
 -- The user identifier can be obtained via <./Line-Messaging-Webhook-Types.html#t:EventSource EventSource>.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#bot-api-get-profile its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#get-profile its API reference>.
 getProfile :: ID -> APIIO Profile
 getProfile id' = do
   let url = "https://api.line.me/v2/bot/profile/" ++ T.unpack id'
@@ -201,7 +201,7 @@
 
 -- | Get a profile of a user in a group, specified by the group ID and the user ID.
 --
--- Please refer to <https://devdocs.line.me/en/#get-group-room-member-profile its API reference>
+-- Please refer to <https://developers.line.me/en/docs/messaging-api/reference/#get-group-member-profile its API reference>
 -- for the difference between this API and 'getProfile'.
 getGroupMemberProfile :: ID -> ID -> APIIO Profile
 getGroupMemberProfile groupId userId = do
@@ -213,7 +213,7 @@
 
 -- | Get a profile of a user in a room, specified by the room ID and the user ID.
 --
--- Please refer to <https://devdocs.line.me/en/#get-group-room-member-profile its API reference>
+-- Please refer to <https://developers.line.me/en/docs/messaging-api/reference/#get-room-member-profile its API reference>
 -- for the difference between this API and 'getProfile'.
 getRoomMemberProfile :: ID -> ID -> APIIO Profile
 getRoomMemberProfile roomId userId = do
@@ -244,7 +244,7 @@
 -- FYI: This feature is only available for LINE@ Approved accounts or official accounts.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#get-group-room-member-ids its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#get-group-member-user-ids its API reference>.
 getGroupMemberIDs :: ID -> APIIO [ID]
 getGroupMemberIDs = getMemberIDs "https://api.line.me/v2/bot/group/" Nothing
 
@@ -253,7 +253,7 @@
 -- FYI: This feature is only available for LINE@ Approved accounts or official accounts.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#get-group-room-member-ids its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#get-room-member-user-ids its API reference>.
 getRoomMemberIDs :: ID -> APIIO [ID]
 getRoomMemberIDs = getMemberIDs "https://api.line.me/v2/bot/room/" Nothing
 
@@ -271,13 +271,13 @@
 -- | Leave a room, specified by @'ID'@.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#leave its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#leave-room its API reference>.
 leaveRoom :: ID -> APIIO ()
 leaveRoom = leave "room"
 
 -- | Leave a group, specified by @'ID'@.
 --
 -- For more information, please refer to
--- <https://devdocs.line.me/en/#leave its API reference>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#leave-group its API reference>.
 leaveGroup :: ID -> APIIO ()
 leaveGroup = leave "group"
diff --git a/src/Line/Messaging/API/Types.hs b/src/Line/Messaging/API/Types.hs
--- a/src/Line/Messaging/API/Types.hs
+++ b/src/Line/Messaging/API/Types.hs
@@ -65,7 +65,7 @@
 --
 -- About existing messageable types, please refer to the following instances.
 -- Each instance is matched with a message object described in
--- <https://devdocs.line.me/en/#send-message-object the LINE documentation>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#message-objects the LINE documentation>.
 class Messageable a where
   toType :: a -> T.Text
   toObject :: a -> [Pair]
@@ -97,7 +97,7 @@
 -- | 'Messageable' for text data.
 --
 -- It contains 'T.Text' of "Data.Text". Its corresponding JSON spec is described
--- <https://devdocs.line.me/en/#text here>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#text here>.
 --
 -- This type is also used to decode text event message from webhook request.
 -- About the webhook usage, please refer to
@@ -118,7 +118,7 @@
 -- | 'Messageable' for image data.
 --
 -- It contains URLs of an original image and its preview. Its corresponding JSON
--- spec is described <https://devdocs.line.me/en/#image here>.
+-- spec is described <https://developers.line.me/en/docs/messaging-api/reference/#image here>.
 data Image = Image { getURL :: URL
                    , getPreviewURL :: URL
                    }
@@ -133,7 +133,7 @@
 -- | 'Messageable' for video data.
 --
 -- It contains URLs of an original video and its preview. Its corresponding JSON
--- spec is described <https://devdocs.line.me/en/#video here>.
+-- spec is described <https://developers.line.me/en/docs/messaging-api/reference/#video here>.
 data Video = Video { getURL :: URL
                    , getPreviewURL :: URL
                    }
@@ -149,7 +149,7 @@
 --
 -- It contains a URL of an audio, and its duration in milliseconds. Its
 -- corresponding JSON spec is described
--- <https://devdocs.line.me/en/#audio here>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#audio here>.
 data Audio = Audio { getURL :: URL
                    , getDuration :: Integer
                    }
@@ -165,7 +165,7 @@
 --
 -- It contains a title, address, and geographic coordination of a location.
 -- Its corresponding JSON spec is described
--- <https://devdocs.line.me/en/#location here>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#location here>.
 --
 -- This type is also used to decode location event message from webhook request.
 -- About the webhook usage, please refer to
@@ -196,7 +196,7 @@
 -- | 'Messageable' for sticker data.
 --
 -- It contains its package and sticker ID.  Its corresponding JSON spec is
--- described <https://devdocs.line.me/en/#sticker here>.
+-- described <https://developers.line.me/en/docs/messaging-api/reference/#sticker here>.
 --
 -- This type is also used to decode sticker event message from webhook request.
 -- About the webhook usage, please refer to
@@ -222,9 +222,9 @@
 --
 -- About how to send an image map message and what each field means, please
 -- refer to
--- <https://devdocs.line.me/en/#imagemap-message image map message spec>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#imagemap-message image map message spec>.
 data ImageMap = ImageMap { getBaseImageURL :: URL
-                           -- ^ <https://devdocs.line.me/en/#base-url Base URL> of images
+                           -- ^ <https://developers.line.me/en/docs/messaging-api/reference/#base-url Base URL> of images
                          , getAltText :: T.Text
                            -- ^ Alt text for devices not supporting image map
                          , getBaseImageSize :: (Integer, Integer)
@@ -281,7 +281,7 @@
 --
 -- About how to send template message and what each field means, please
 -- refer to
--- <https://devdocs.line.me/en/#template-messages template message spec>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#template-messages template message spec>.
 data Template t = Template { getAltText :: T.Text
                              -- ^ Alt text for devices not supporting template message
                            , getTemplateContent :: t
@@ -315,10 +315,10 @@
 
 -- | The buttons content type for template message.
 --
--- <<https://devdocs.line.me/images/buttons.png Buttons template>>
+-- <<https://developers.line.me/media/messaging-api/messages/buttons.png Buttons template>>
 --
 -- For more details of each field, please refer to the
--- <https://devdocs.line.me/en/#buttons Buttons> section in the LINE
+-- <https://developers.line.me/en/docs/messaging-api/reference/#buttons Buttons> section in the LINE
 -- documentation.
 data Buttons = Buttons { getThumbnailURL :: Maybe URL
                        -- ^ URL for thumbnail image
@@ -345,10 +345,10 @@
 
 -- | The confirm content type for template message.
 --
--- <<https://devdocs.line.me/images/confirm.png Confirm template>>
+-- <<https://developers.line.me/media/messaging-api/messages/confirm.png Confirm template>>
 --
 -- For more details of each field, please refer to the
--- <https://devdocs.line.me/en/#confirm Confirm> section in the LINE
+-- <https://developers.line.me/en/docs/messaging-api/reference/#confirm Confirm> section in the LINE
 -- documentation.
 data Confirm = Confirm { getText :: T.Text
                        -- ^ Confirm text
@@ -366,10 +366,10 @@
 
 -- | The carousel content type for template message.
 --
--- <<https://devdocs.line.me/images/carousel.png Carousel template>>
+-- <<https://developers.line.me/media/messaging-api/messages/carousel.png Carousel template>>
 --
 -- For more details of each field, please refer to the
--- <https://devdocs.line.me/en/#carousel Carousel> section in the LINE
+-- <https://developers.line.me/en/docs/messaging-api/reference/#carousel Carousel> section in the LINE
 -- documentation.
 data Carousel = Carousel { getColumns :: [Column]
                          -- ^ A list of columns for a carousel template
@@ -409,10 +409,10 @@
 
 -- | The image carousel content type for template message.
 --
--- <<https://devdocs.line.me/images/image_carousel.png Image carousel template>>
+-- <<https://developers.line.me/media/messaging-api/messages/image-carousel.png Image carousel template>>
 --
 -- For more details of each field, please refer to the
--- <https://devdocs.line.me/en/#image-carousel Image carousel> section in the LINE
+-- <https://developers.line.me/en/docs/messaging-api/reference/#image-carousel Image carousel> section in the LINE
 -- documentation.
 data ImageCarousel = ImageCarousel { getColumns :: [ImageColumn]
                                    -- ^ A list of columns for an image carousel template
@@ -470,7 +470,7 @@
                       -- will be sent with the date and time selected by the
                       -- user from the date and time selection dialog. For the
                       -- detailed information of datetime picker, please refer
-                      -- to the <https://devdocs.line.me/en/#datetime-picker-action official documentation>.
+                      -- to the <https://developers.line.me/en/docs/messaging-api/reference/#datetime-picker-action official documentation>.
                     deriving (Eq, Show)
 
 instance ToJSON TemplateAction where
@@ -533,8 +533,8 @@
 -- which may rarely occur if used properly, does not.
 --
 -- For more details of error types, please refer to
--- <https://devdocs.line.me/en/#status-codes Status codes> and
--- <https://devdocs.line.me/en/#error-response Error response> sections in the
+-- <https://developers.line.me/en/docs/messaging-api/reference/#status-codes Status codes> and
+-- <https://developers.line.me/en/docs/messaging-api/reference/#error-responses Error response> sections in the
 -- LINE documentation.
 data APIError = BadRequest (Maybe APIErrorBody)
               -- ^ 400 Bad Request with a parsed error body, caused by badly
@@ -547,7 +547,7 @@
               -- unauthorized account or plan.
               | TooManyRequests (Maybe APIErrorBody)
               -- ^ 429 Too Many Requests with a parsed error body, caused by
-              -- exceeding the <https://devdocs.line.me/en/#rate-limits rate limit>.
+              -- exceeding the <https://developers.line.me/en/docs/messaging-api/reference/#rate-limits rate limit>.
               | InternalServerError (Maybe APIErrorBody)
               -- ^ 500 Internal Server Error with a parsed error body.
               | UndefinedStatusCode Int BL.ByteString
diff --git a/src/Line/Messaging/Webhook/Types.hs b/src/Line/Messaging/Webhook/Types.hs
--- a/src/Line/Messaging/Webhook/Types.hs
+++ b/src/Line/Messaging/Webhook/Types.hs
@@ -21,7 +21,7 @@
   -- (e.g. 'FromJSON') are implemented here.
   --
   -- For the event spec, please refer to
-  -- <https://devdocs.line.me/en/#webhook-event-object the LINE documentation>.
+  -- <https://developers.line.me/en/docs/messaging-api/reference/#webhook-event-objects the LINE documentation>.
   Event (..),
   EventTuple,
   ReplyToken,
@@ -214,7 +214,7 @@
 -- @<./Line-Messaging-API.html#v:getContent getContent>@ API.
 --
 -- For more details of event messages, please refer to the
--- <https://devdocs.line.me/en/#message-event Message event> section of the LINE
+-- <https://developers.line.me/en/docs/messaging-api/reference/#message-event Message event> section of the LINE
 -- documentation.
 data EventMessage = TextEM ID Text -- ^ Text event message.
                   | ImageEM ID -- ^ Image event message.
@@ -252,7 +252,7 @@
 -- | Represent params of Postback data.
 --
 -- It's currently used only for the datetime picker action. For the detail,
--- please refer to the <https://devdocs.line.me/en/#postback-params-object official documentation>.
+-- please refer to the <https://developers.line.me/en/docs/messaging-api/reference/#postback-params-object official documentation>.
 data PostbackParams = PostbackParamsDate T.Text
                     | PostbackParamsTime T.Text
                     | PostbackParamsDatetime T.Text
diff --git a/src/Line/Messaging/Webhook/Validation.hs b/src/Line/Messaging/Webhook/Validation.hs
--- a/src/Line/Messaging/Webhook/Validation.hs
+++ b/src/Line/Messaging/Webhook/Validation.hs
@@ -21,7 +21,7 @@
 -- valid LINE server.
 --
 -- For more details of webhook authentication, please refer to
--- <https://devdocs.line.me/en/#webhook-authentication the LINE documentation>.
+-- <https://developers.line.me/en/docs/messaging-api/reference/#signature-validation the LINE documentation>.
 validateSignature :: ChannelSecret -> BL.ByteString -> Signature -> Bool
 validateSignature secret body signature = hash == signature
   where hash = Base64.encode $ hmaclazy (encodeUtf8 secret) body