diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c2838ddc..caa3c379 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,17 +14,16 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { os: macOS-13, stack: lts-13.30, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.2, filepath-1.4.100.0, unix-2.8.0.0" }
-          - { os: macos-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.2, filepath-1.5.2.0, os-string-2.0.2, unix-2.8.5.1", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, unix: {os-string: true}}", ghc-flags: -Werror=deprecations }
-          - { os: ubuntu-latest, ghc: 8.6.5, cabal: 3.0.0.0, overrides: "before_prepare() { sed -i.bak /utimensat/d configure.ac; }" }
+          - { os: macOS-13, stack: lts-13.30, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, unix-2.8.0.0" }
+          - { os: macos-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, unix-2.8.5.1", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, unix: {os-string: true}}", ghc-flags: -Werror=deprecations }
           - { os: ubuntu-latest, ghc: 8.10.7, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: 9.0.2, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: 9.2.4, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: 9.4.3, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: latest, cabal: latest, cabal-package-flags: +os-string, ghc-flags: -Werror=deprecations }
-          - { os: windows-latest, stack: lts-13.30, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.2, filepath-1.4.100.0, time-1.8.0.2, Win32-2.13.3.0", overrides: "before_prepare() { sed -i.bak -e /CreateSymbolicLinkW/d -e /GetFinalPathNameByHandleW/d configure.ac; }" }
-          - { os: windows-latest, stack: lts-17.5, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.2, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0" }
-          - { os: windows-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.2, filepath-1.5.2.0, os-string-2.0.2, time-1.14, Win32-2.14.0.0", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, Win32: {os-string: true}}", ghc-flags: -Werror=deprecations }
+          - { os: windows-latest, stack: lts-13.30, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.8.0.2, Win32-2.13.3.0", overrides: "before_prepare() { sed -i.bak -e /CreateSymbolicLinkW/d -e /GetFinalPathNameByHandleW/d configure.ac; }" }
+          - { os: windows-latest, stack: lts-17.5, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0" }
+          - { os: windows-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, time-1.14, Win32-2.14.0.0", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, Win32: {os-string: true}}", ghc-flags: -Werror=deprecations }
     runs-on: ${{ matrix.os }}
     env:
       CABAL_PACKAGE_FLAGS: ${{ matrix.cabal-package-flags }}
diff --git a/System/Directory/OsPath.hs b/System/Directory/OsPath.hs
index dce71b56..64923773 100644
--- a/System/Directory/OsPath.hs
+++ b/System/Directory/OsPath.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE QuasiQuotes #-}
+
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Directory.OsPath
@@ -105,13 +107,13 @@ module System.Directory.OsPath
 import Prelude ()
 import System.Directory.Internal
 import System.Directory.Internal.Prelude
+import System.OsString (osstr)
+import qualified System.File.OsPath as OS
 import System.OsPath
   ( (<.>)
   , (</>)
   , addTrailingPathSeparator
-  , decodeFS
   , dropTrailingPathSeparator
-  , encodeFS
   , hasTrailingPathSeparator
   , isAbsolute
   , joinPath
@@ -749,13 +751,7 @@ withReplacementFile :: OsPath            -- ^ Destination file
 withReplacementFile path postAction action =
   (`ioeAddLocation` "withReplacementFile") `modifyIOError` do
     mask $ \ restore -> do
-      -- TODO: AFPP doesn't support openBinaryTempFile yet,
-      --       so we have to use this (sad) workaround
-      --       (on unix, converts using filesystem encoding, on windows
-      --       converts with UTF-16LE)
-      d <- decodeFS (takeDirectory path)
-      (tmpFPath', hTmp) <- openBinaryTempFile d ".copyFile.tmp"
-      tmpFPath <- encodeFS tmpFPath'
+      (tmpFPath, hTmp) <- OS.openBinaryTempFile (takeDirectory path) [osstr|.copyFile.tmp|]
       (`onException` ignoreIOExceptions (removeFile tmpFPath)) $ do
         r <- (`onException` ignoreIOExceptions (hClose hTmp)) $ do
           restore (action hTmp)
diff --git a/directory.cabal b/directory.cabal
index 9921cfa1..088444bd 100644
--- a/directory.cabal
+++ b/directory.cabal
@@ -11,7 +11,7 @@ description:
   directories in a portable way.
 category:       System
 build-type:     Configure
-tested-with:    GHC == 8.6.5 || == 8.10.7 || == 9.0.2 || == 9.2.4 || == 9.4.3
+tested-with:    GHC == 8.10.7 || == 9.0.2 || == 9.2.4 || == 9.4.3
 
 extra-tmp-files:
     autom4te.cache
@@ -59,8 +59,8 @@ Library
     include-dirs: .
 
     build-depends:
-        base     >= 4.12.0 && < 4.21,
-        file-io  >= 0.1.2 && < 0.2,
+        base     >= 4.13.0 && < 4.21,
+        file-io  >= 0.1.4 && < 0.2,
         time     >= 1.8.0 && < 1.15,
     if os(windows)
         build-depends: Win32 >= 2.13.3 && < 2.15