diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+0.5.5 (1/15/2024)
+=================
+* Fix runtime error on Windows [6](https://github.com/standardsemiconductor/serialport/pull/6)
+* Deprecate String `fdRead` [9](https://github.com/standardsemiconductor/serialport/pull/9)
+* Update to unix-2.8 [8](https://github.com/standardsemiconductor/serialport/pull/8)
+
 0.5.4 (12/02/2022)
 ==================
 * Update package dependency constraints
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Serialport
 
-![Haskell CI](https://github.com/standardsemiconductor/serialport/workflows/Haskell%20CI/badge.svg)
+[![Haskell CI](https://github.com/standardsemiconductor/serialport/actions/workflows/haskell.yml/badge.svg)](https://github.com/standardsemiconductor/serialport/actions/workflows/haskell.yml)
 [![Hackage][hackage-badge]][hackage]
 [![Hackage Dependencies][hackage-deps-badge]][hackage-deps]
 
diff --git a/System/Hardware/Serialport/Posix.hsc b/System/Hardware/Serialport/Posix.hsc
--- a/System/Hardware/Serialport/Posix.hsc
+++ b/System/Hardware/Serialport/Posix.hsc
@@ -1,28 +1,24 @@
 {-# LANGUAGE ForeignFunctionInterface #-}
 {-# LANGUAGE DeriveDataTypeable       #-}
 {-# LANGUAGE LambdaCase               #-}
-{-# OPTIONS_HADDOCK hide #-}
+{-# OPTIONS_HADDOCK hide              #-}
 module System.Hardware.Serialport.Posix where
 
+import qualified Control.Exception as Ex
+import Data.Bits
+import qualified Data.ByteString.Char8 as B
+import Data.Either
+import Data.Typeable
+import Foreign (Ptr, nullPtr, castPtr, alloca, peek, with)
+import Foreign.C
 import GHC.IO.Handle
 import GHC.IO.Encoding
-
+import System.Hardware.Serialport.Types
 import System.Posix.IO
-import System.Posix.Types (Fd, ByteCount)
+import qualified System.Posix.IO.ByteString as BIO
+import System.Posix.Types (Fd)
 import System.Posix.Terminal
 
-import Foreign (Ptr, nullPtr, castPtr, alloca, peek, with)
-import Foreign.C
-
-import Data.Typeable
-import Data.Bits
-
-import qualified Data.ByteString.Char8 as B
-import qualified Control.Exception     as Ex
-
-import System.Hardware.Serialport.Types
-
-
 data SerialPort = SerialPort
   { fd           :: Fd
   , portSettings :: SerialPortSettings
@@ -39,11 +35,12 @@
 
 
 -- |Open and configure a serial port
-openSerial :: FilePath            -- ^ Serial port, such as @\/dev\/ttyS0@ or @\/dev\/ttyUSB0@
-           -> SerialPortSettings
-           -> IO SerialPort
+openSerial
+  :: FilePath            -- ^ Serial port, such as @\/dev\/ttyS0@ or @\/dev\/ttyUSB0@
+  -> SerialPortSettings
+  -> IO SerialPort
 openSerial dev settings = do
-  fd' <- openFd dev ReadWrite Nothing defaultFileFlags { noctty = True, nonBlock = True }
+  fd' <- openFd dev ReadWrite defaultFileFlags { noctty = True, nonBlock = True }
   setTIOCEXCL fd'
   setFdOption fd' NonBlockingRead False
   let serial_port = SerialPort fd' defaultSerialSettings
@@ -67,13 +64,10 @@
 -- |Receive bytes, given the maximum number
 recv :: SerialPort -> Int -> IO B.ByteString
 recv port n = do
-  result <- withEncoding char8 $ Ex.try $ fdRead (fd port) count :: IO (Either IOError (String, ByteCount))
-  return $ case result of
-     Right (str, _) -> B.pack str
-     Left _         -> B.empty
+  result <- withEncoding char8 $ Ex.try $ BIO.fdRead (fd port) count :: IO (Either IOError B.ByteString)
+  return $ fromRight B.empty result
   where
     count = fromIntegral n
-
 
 -- |Send bytes
 send
diff --git a/System/Win32/Comm.hsc b/System/Win32/Comm.hsc
--- a/System/Win32/Comm.hsc
+++ b/System/Win32/Comm.hsc
@@ -37,7 +37,7 @@
 
 instance Storable SerialPortSettings where
   sizeOf _ = #{size DCB}
-  alignment = sizeOf
+  alignment _ = 16
   poke buf settings = do
     #{poke DCB, DCBlength} buf (sizeOf settings)
     #{poke DCB, BaudRate} buf (fromIntegral (commSpeedToBaudRate (commSpeed settings)) :: DWORD)
@@ -138,7 +138,7 @@
 
 instance Storable COMMTIMEOUTS where
   sizeOf _ = #{size COMMTIMEOUTS}
-  alignment = sizeOf
+  alignment _ = 16
   poke buf ct = do
     #{poke COMMTIMEOUTS, ReadIntervalTimeout} buf (readIntervalTimeout ct)
     #{poke COMMTIMEOUTS, ReadTotalTimeoutMultiplier} buf ( readTotalTimeoutMultiplier ct)
diff --git a/serialport.cabal b/serialport.cabal
--- a/serialport.cabal
+++ b/serialport.cabal
@@ -1,11 +1,11 @@
 Name:           serialport
-Version:        0.5.4
+Version:        0.5.5
 Cabal-Version:  >= 1.10
 Build-Type:     Simple
 license:        BSD3
 license-file:   LICENSE
 copyright:      (c) 2009-2011 Joris Putcuyps,
-                (c) 2020-2022 David Cox
+                (c) 2020-2024 David Cox
 author:         Joris Putcuyps, David Cox
 maintainer:     David Cox <standard.semiconductor@gmail.com>
 homepage:       https://github.com/standardsemiconductor/serialport
@@ -24,16 +24,16 @@
 Library
   Exposed-Modules:    System.Hardware.Serialport
   Other-Modules:      System.Hardware.Serialport.Types
-  Build-Depends:      base       >= 4.12 && < 4.17, 
-                      bytestring >= 0.11 && < 0.12
+  Build-Depends:      base       >= 4.12 && < 4.20,
+                      bytestring >= 0.11 && < 0.13
   ghc-options:        -Wall -fno-warn-orphans
   default-language: Haskell2010
     
   if !os(windows)
-    Build-Depends:    unix >= 2.7 && < 2.8
+    Build-Depends:    unix >= 2.8 && < 2.9
     Other-Modules:    System.Hardware.Serialport.Posix
   else
-    Build-Depends:    Win32 >= 2.11 && < 2.14
+    Build-Depends:    Win32 >= 2.11 && < 2.15
     Other-Modules:    System.Hardware.Serialport.Windows
                       System.Win32.Comm