diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog for notion-client
 
+## 0.2.0.0 (2026-03-29)
+
+### Breaking Changes
+* Bump Notion API version from `2025-09-03` to `2026-03-11`
+* Change `DataSourceObject.archived` from `Bool` to `Maybe Bool` (field no longer guaranteed in API responses)
+
+### New Features
+* Add `PageMarkdown` type and `retrievePageMarkdown` method for `GET /v1/pages/{page_id}/markdown`
+* Support optional `include_transcript` query parameter for markdown retrieval
+
+### Bug Fixes
+* Handle API rename of `archived` to `is_archived` in responses for `PageObject`, `BlockObject`, `DatabaseObject`, and `DataSourceObject`
+
 ## 0.1.0.1 (2026-03-29)
 
 ### Bug Fixes
diff --git a/notion-client.cabal b/notion-client.cabal
--- a/notion-client.cabal
+++ b/notion-client.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.4
 name:               notion-client
-version:            0.1.0.1
+version:            0.2.0.0
 synopsis:           Type-safe Haskell client for the Notion API
 description:
   This package provides comprehensive and type-safe bindings
diff --git a/src/Notion/V1.hs b/src/Notion/V1.hs
--- a/src/Notion/V1.hs
+++ b/src/Notion/V1.hs
@@ -48,7 +48,7 @@
 import Notion.V1.Databases (CreateDatabase, DatabaseID, DatabaseObject, QueryDatabase, UpdateDatabase)
 import Notion.V1.Databases qualified as Databases
 import Notion.V1.ListOf (ListOf (..))
-import Notion.V1.Pages (CreatePage, PageID, PageObject, UpdatePage)
+import Notion.V1.Pages (CreatePage, PageID, PageMarkdown, PageObject, UpdatePage)
 import Notion.V1.Pages qualified as Pages
 import Notion.V1.Search (SearchRequest)
 import Notion.V1.Search qualified as Search
@@ -76,7 +76,7 @@
   Methods
 makeMethods clientEnv token = Methods {..}
   where
-    notionVersion = "2025-09-03" -- Notion API version with data source support
+    notionVersion = "2026-03-11" -- Notion API version with markdown content support
     -- If you experience 400 errors, check for updated versions at
     -- https://developers.notion.com/reference/versioning
     ( ( createDatabase
@@ -92,6 +92,7 @@
         :<|> ( retrievePage
                  :<|> createPage
                  :<|> updatePage
+                 :<|> retrievePageMarkdown
                )
         :<|> ( retrieveBlock
                  :<|> updateBlock
@@ -140,6 +141,11 @@
     createPage :: CreatePage -> IO PageObject,
     retrievePage :: PageID -> IO PageObject,
     updatePage :: PageID -> UpdatePage -> IO PageObject,
+    retrievePageMarkdown ::
+      PageID ->
+      Maybe Bool ->
+      -- \^ include_transcript
+      IO PageMarkdown,
     -- \* Blocks
     retrieveBlock :: BlockID -> IO BlockObject,
     updateBlock :: BlockID -> Blocks.BlockContent -> IO BlockObject,
diff --git a/src/Notion/V1/Blocks.hs b/src/Notion/V1/Blocks.hs
--- a/src/Notion/V1/Blocks.hs
+++ b/src/Notion/V1/Blocks.hs
@@ -11,9 +11,11 @@
   )
 where
 
-import Data.Aeson ((.:), (.=))
+import Control.Applicative ((<|>))
+import Data.Aeson ((.:), (.:?), (.=))
 import Data.Aeson qualified as Aeson
 import Data.Aeson.Key qualified as Key
+import Data.Maybe (fromMaybe)
 import Notion.Prelude
 import Notion.V1.Common (BlockID, ObjectType (..), Parent)
 import Notion.V1.ListOf (ListOf)
@@ -48,7 +50,7 @@
       createdBy <- o .: "created_by"
       lastEditedBy <- o .: "last_edited_by"
       hasChildren <- o .: "has_children"
-      archived <- o .: "archived"
+      archived <- fmap (fromMaybe False) (o .:? "is_archived" <|> o .:? "archived")
       type_ <- o .: "type"
       -- Content is stored under a field named after the block type (e.g., "heading_1", "paragraph")
       content <- o .: Key.fromText type_
diff --git a/src/Notion/V1/DataSources.hs b/src/Notion/V1/DataSources.hs
--- a/src/Notion/V1/DataSources.hs
+++ b/src/Notion/V1/DataSources.hs
@@ -15,6 +15,7 @@
   )
 where
 
+import Control.Applicative ((<|>))
 import Data.Aeson ((.:), (.:?))
 import Notion.Prelude
 import Notion.V1.Common (Cover, Icon, ObjectType, Parent, UUID)
@@ -40,7 +41,7 @@
     url :: Text,
     parent :: Parent,
     databaseParent :: Maybe Parent,
-    archived :: Bool,
+    archived :: Maybe Bool,
     isInline :: Maybe Bool,
     inTrash :: Maybe Bool,
     publicUrl :: Maybe Text,
@@ -66,7 +67,7 @@
       url <- o .: "url"
       parent <- o .: "parent"
       databaseParent <- o .:? "database_parent"
-      archived <- o .: "archived"
+      archived <- o .:? "is_archived" <|> o .:? "archived"
       isInline <- o .:? "is_inline"
       inTrash <- o .:? "in_trash"
       publicUrl <- o .:? "public_url"
diff --git a/src/Notion/V1/Databases.hs b/src/Notion/V1/Databases.hs
--- a/src/Notion/V1/Databases.hs
+++ b/src/Notion/V1/Databases.hs
@@ -14,6 +14,7 @@
   )
 where
 
+import Control.Applicative ((<|>))
 import Data.Aeson ((.:), (.:?))
 import Notion.Prelude
 import Notion.V1.Common (Cover, Icon, ObjectType (..), Parent, UUID)
@@ -81,7 +82,7 @@
       cover <- o .:? "cover"
       url <- o .: "url"
       parent <- o .: "parent"
-      archived <- o .:? "archived"
+      archived <- o .:? "is_archived" <|> o .:? "archived"
       isInline <- o .:? "is_inline"
       inTrash <- o .:? "in_trash"
       isLocked <- o .:? "is_locked"
diff --git a/src/Notion/V1/Pages.hs b/src/Notion/V1/Pages.hs
--- a/src/Notion/V1/Pages.hs
+++ b/src/Notion/V1/Pages.hs
@@ -13,15 +13,20 @@
     mkCreatePage,
     mkUpdatePage,
 
+    -- * Markdown
+    PageMarkdown (..),
+
     -- * Servant
     API,
   )
 where
 
+import Control.Applicative ((<|>))
 import Data.Aeson ((.:), (.:?), (.=))
 import Data.Aeson qualified as Aeson
 import Data.Aeson.Key qualified as Key
 import Data.Aeson.KeyMap qualified as KeyMap
+import Data.Maybe (fromMaybe)
 import Notion.Prelude hiding (Number)
 import Notion.V1.Common (Cover, Icon, ObjectType (..), Parent, UUID)
 import Notion.V1.Users (UserReference)
@@ -60,7 +65,7 @@
       cover <- o .:? "cover"
       icon <- o .:? "icon"
       parent <- o .: "parent"
-      archived <- o .: "archived"
+      archived <- fmap (fromMaybe False) (o .:? "is_archived" <|> o .:? "archived")
       inTrash <- o .: "in_trash"
       properties <- o .: "properties"
       url <- o .: "url"
@@ -267,6 +272,23 @@
 instance ToJSON SelectOption where
   toJSON = genericToJSON aesonOptions
 
+-- | Response from @GET \/v1\/pages\/{page_id}\/markdown@
+--
+-- Contains the page content rendered as Notion-flavored enhanced markdown.
+data PageMarkdown = PageMarkdown
+  { id :: PageID,
+    markdown :: Text,
+    truncated :: Bool,
+    unknownBlockIds :: Vector UUID
+  }
+  deriving stock (Generic, Show)
+
+instance FromJSON PageMarkdown where
+  parseJSON = genericParseJSON aesonOptions
+
+instance ToJSON PageMarkdown where
+  toJSON = genericToJSON aesonOptions
+
 -- | Servant API
 type API =
   "pages"
@@ -277,4 +299,8 @@
            :<|> Capture "page_id" PageID
            :> ReqBody '[JSON] UpdatePage
            :> Patch '[JSON] PageObject
+           :<|> Capture "page_id" PageID
+           :> "markdown"
+           :> QueryParam "include_transcript" Bool
+           :> Get '[JSON] PageMarkdown
        )
diff --git a/tasty/Main.hs b/tasty/Main.hs
--- a/tasty/Main.hs
+++ b/tasty/Main.hs
@@ -2,7 +2,9 @@
 
 import Data.Text qualified as Text
 import Notion.V1
+import Notion.V1.Common (UUID (..))
 import Notion.V1.ListOf (ListOf (..))
+import Notion.V1.Pages (PageMarkdown (..))
 import Notion.V1.Search (SearchRequest (..))
 import Notion.V1.Users (UserObject (..))
 import System.Environment qualified as Environment
@@ -31,13 +33,24 @@
       clientEnv <- getClientEnv "https://api.notion.com/v1"
       let methods = makeMethods clientEnv (Text.pack token)
 
+      mPageId <- lookupEnv "NOTION_TEST_PAGE_ID"
+
+      let markdownTests = case mPageId of
+            Just pageId ->
+              [ testCase "Retrieve page as markdown" $
+                  testRetrievePageMarkdown methods (Text.pack pageId)
+              ]
+            Nothing -> []
+
       pure $
         testGroup
           "Notion API Tests"
-          [ testCase "Retrieve current user" $ testRetrieveCurrentUser methods,
-            testCase "List users" $ testListUsers methods,
-            testCase "Timestamp parsing works" $ testSearchAPI methods
-          ]
+          ( [ testCase "Retrieve current user" $ testRetrieveCurrentUser methods,
+              testCase "List users" $ testListUsers methods,
+              testCase "Timestamp parsing works" $ testSearchAPI methods
+            ]
+              <> markdownTests
+          )
 
 testRetrieveCurrentUser :: Methods -> Assertion
 testRetrieveCurrentUser Methods {retrieveMyUser} = do
@@ -65,6 +78,12 @@
   _ <- search searchParams
   -- If this test runs without errors, it means timestamp parsing works
   assertBool "Search should run without timestamp parsing errors" True
+
+testRetrievePageMarkdown :: Methods -> Text.Text -> Assertion
+testRetrievePageMarkdown Methods {retrievePageMarkdown} pageId = do
+  result <- retrievePageMarkdown (UUID pageId) Nothing
+  let PageMarkdown {markdown = md} = result
+  assertBool "Markdown content should not be empty" (not $ Text.null md)
 
 lookupEnv :: String -> IO (Maybe String)
 lookupEnv var = Environment.lookupEnv var