diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,6 +1,11 @@
+__v0.9.1__
+
+rename field: postToread -> postToRead
+
 __v0.9.0__
 
 refactored Client.hs to simplify parameters
+
 promote types under .Client subtree to top-level
 
 __v0.8.5__
diff --git a/pinboard.cabal b/pinboard.cabal
--- a/pinboard.cabal
+++ b/pinboard.cabal
@@ -1,5 +1,5 @@
 name:                pinboard
-version:             0.9.0
+version:             0.9.1
 synopsis:            Access to the Pinboard API
 license:             MIT
 license-file:        LICENSE
diff --git a/src/Pinboard/ApiRequest.hs b/src/Pinboard/ApiRequest.hs
--- a/src/Pinboard/ApiRequest.hs
+++ b/src/Pinboard/ApiRequest.hs
@@ -186,7 +186,7 @@
                                                             ( Just postTime     ) 
                                                             ( Just replace      ) 
                                                             ( Just postShared   ) 
-                                                            ( Just postToread   )
+                                                            ( Just postToRead   )
 
 -- TAGS ----------------------------------------------------------------------
 
diff --git a/src/Pinboard/ApiTypes.hs b/src/Pinboard/ApiTypes.hs
--- a/src/Pinboard/ApiTypes.hs
+++ b/src/Pinboard/ApiTypes.hs
@@ -66,7 +66,7 @@
     , postHash         :: Text
     , postTime         :: UTCTime
     , postShared       :: Bool
-    , postToread       :: Bool
+    , postToRead       :: Bool
     , postTags         :: [Tag]
     } deriving (Show, Eq, Data, Typeable, Ord)
 
@@ -92,7 +92,7 @@
     , "hash"        .= toJSON postHash
     , "time"        .= toJSON postTime
     , "shared"      .= boolToYesNo postShared
-    , "toread"      .= boolToYesNo postToread
+    , "toread"      .= boolToYesNo postToRead
     , "tags"        .= unwords postTags ]
 
 boolFromYesNo :: Text -> Bool
diff --git a/src/Pinboard/Client.hs b/src/Pinboard/Client.hs
--- a/src/Pinboard/Client.hs
+++ b/src/Pinboard/Client.hs
@@ -155,7 +155,7 @@
 buildReq url = do
   req <- liftIO $ parseUrl $ "https://api.pinboard.in/v1/" <> url
   return $ req 
-    { requestHeaders = [("User-Agent","pinboard.hs/0.9.0")]
+    { requestHeaders = [("User-Agent","pinboard.hs/0.9.1")]
     , checkStatus = \_ _ _ -> Nothing
     }