diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 3e1c5e3..aceeb2a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,4 +1,3 @@
-
 name: CI
 
 # Trigger the workflow on push or pull request, but only for the master branch
@@ -14,18 +13,22 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        cabal: ["3.4"]
+        cabal: ["3.10"]
         ghc:
-          - "8.8.4"
-          - "8.10.4"
-          - "9.0.1"
+          # GHC versions listed as current stable releases
+          - "9.2.8"
+          - "9.4.7"
+          - "9.6.3"
+        # GHC 9.8 only works with cabal-install >= 3.10.2.0, which is not
+        # available from haskell-actions/setup (or on Hackage)
+        # - "9.8.1"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
-    - uses: haskell/actions/setup@v1.2
+    - uses: haskell-actions/setup@v2
       id: setup-haskell-cabal
-      name: Setup Haskell
+      name: Setup GHC and cabal-install
       with:
         ghc-version: ${{ matrix.ghc }}
         cabal-version: ${{ matrix.cabal }}
@@ -38,7 +41,7 @@ jobs:
       run: |
         cabal freeze
 
-    - uses: actions/cache@v2.1.3
+    - uses: actions/cache@v3
       name: Cache ~/.cabal/store
       with:
         path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
@@ -52,33 +55,29 @@ jobs:
       run: |
         cabal build all
 
-    - name: Test
+    - name: Test the test-suite test
       run: |
         cabal test path:test
 
-    # - name: Test
-    #   run: |
-    #     cabal test path:validity-test
+  # - name: Test the test-suite validity-test
+  #   run: |
+  #     cabal test path:validity-test
 
+  # As of 2023-10-16, the GitHub-hosted runner on ubuntu-latest comes with
+  # Stack 2.13.1 and GHC 9.6.3.
   stack:
     name: stack / ghc ${{ matrix.ghc }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        stack: ["2.3.1"]
-        ghc: ["8.8.4"]
+        ghc: ["9.6.3"]
 
     steps:
-    - uses: actions/checkout@v2
-
-    - uses: haskell/actions/setup@v1.2
-      name: Setup Haskell Stack
-      with:
-        ghc-version: ${{ matrix.ghc }}
-        stack-version: ${{ matrix.stack }}
+    - name: Clone project
+      uses: actions/checkout@v4
 
-    - uses: actions/cache@v2.1.3
-      name: Cache ~/.stack
+    - name: Cache Stack root
+      uses: actions/cache@v3
       with:
         path: ~/.stack
         key: ${{ runner.os }}-${{ matrix.ghc }}-stack
@@ -91,10 +90,10 @@ jobs:
       run: |
         stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
 
-    - name: Test
+    - name: Test the test-suite test
       run: |
-        stack test --system-ghc :test
+        stack test path:test:test --system-ghc
 
-        # - name: Test
-        #   run: |
-        #     stack test --system-ghc :validity-test
+  # - name: Test the test-suite validity-test
+  #   run: |
+  #     stack test path:test:validity-test --system-ghc
diff --git a/CHANGELOG b/CHANGELOG
index 61fb066..c987ea0 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+0.9.3
+  * Add `splitDrive`, `takeDrive`, `dropDrive` and `isDrive`.
+
 0.9.2
   * Data instances for Rel, Abs, File, and Dir.
   * Bump hashable upper bound to <1.5.
diff --git a/path.cabal b/path.cabal
index 7b1172b..d2407d2 100644
--- a/path.cabal
+++ b/path.cabal
@@ -1,5 +1,5 @@
 name:                path
-version:             0.9.2
+version:             0.9.3
 synopsis:            Support for well-typed paths
 description:         Support for well-typed paths.
 license:             BSD3
diff --git a/src/Path/Include.hs b/src/Path/Include.hs
index fc01931..82d71bb 100644
--- a/src/Path/Include.hs
+++ b/src/Path/Include.hs
@@ -63,6 +63,10 @@ module Path.PLATFORM_NAME
   ,splitExtension
   ,fileExtension
   ,replaceExtension
+  ,splitDrive
+  ,takeDrive
+  ,dropDrive
+  ,isDrive
   ,mapSomeBase
   ,prjSomeBase
    -- * Parsing
@@ -377,6 +381,31 @@ parent (Path fp) =
     $ FilePath.takeDirectory
     $ FilePath.dropTrailingPathSeparator fp
 
+-- | Split an absolute path into a drive and, perhaps, a path. On POSIX, @/@ is
+-- a drive.
+splitDrive :: Path Abs t -> (Path Abs Dir, Maybe (Path Rel t))
+splitDrive (Path fp) =
+    let (d, rest) = FilePath.splitDrive fp
+        mRest = if null rest then Nothing else Just (Path rest)
+    in  (Path d, mRest)
+
+-- | Get the drive from an absolute path. On POSIX, @/@ is a drive.
+--
+-- > takeDrive x = fst (splitDrive x)
+takeDrive :: Path Abs t -> Path Abs Dir
+takeDrive = fst . splitDrive
+
+-- | Drop the drive from an absolute path. May result in 'Nothing' if the path
+-- is just a drive.
+--
+-- > dropDrive x = snd (splitDrive x)
+dropDrive :: Path Abs t -> Maybe (Path Rel t)
+dropDrive = snd . splitDrive
+
+-- | Is an absolute directory path a drive?
+isDrive :: Path Abs Dir -> Bool
+isDrive = isNothing . dropDrive
+
 -- | Extract the file part of a path.
 --
 -- The following properties hold:
diff --git a/stack.yaml b/stack.yaml
index 177e764..9d76b09 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,45 +1 @@
-resolver: nightly-2021-11-19
-extra-deps:
-- github: NorfairKing/validity
-  commit: 35bc8d45b27e6c21429e4b681b16e46ccd541b3b
-  subdirs:
-    - genvalidity
-    - genvalidity-aeson
-    - genvalidity-bytestring
-    - genvalidity-containers
-    - genvalidity-criterion
-    - genvalidity-hspec
-    - genvalidity-hspec-aeson
-    - genvalidity-hspec-binary
-    - genvalidity-hspec-cereal
-    - genvalidity-hspec-hashable
-    - genvalidity-hspec-optics
-    - genvalidity-hspec-persistent
-    - genvalidity-path
-    - genvalidity-persistent
-    - genvalidity-property
-    - genvalidity-scientific
-    - genvalidity-sydtest
-    - genvalidity-sydtest-aeson
-    - genvalidity-sydtest-hashable
-    - genvalidity-sydtest-lens
-    - genvalidity-sydtest-persistent
-    - genvalidity-text
-    - genvalidity-time
-    - genvalidity-unordered-containers
-    - genvalidity-uuid
-    - genvalidity-vector
-    - validity
-    - validity-aeson
-    - validity-bytestring
-    - validity-containers
-    - validity-path
-    - validity-persistent
-    - validity-primitive
-    - validity-scientific
-    - validity-text
-    - validity-time
-    - validity-unordered-containers
-    - validity-uuid
-    - validity-vector
-
+resolver: nightly-2023-10-16 # GHC 9.6.3
diff --git a/stack.yaml.lock b/stack.yaml.lock
index cafb4e3..c167fde 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -3,517 +3,10 @@
 # For more information, please see the documentation at:
 #   https://docs.haskellstack.org/en/stable/lock_files
 
-packages:
-- completed:
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-    subdir: genvalidity
-    url: https://github.com/NorfairKing/validity/archive/35bc8d45b27e6c21429e4b681b16e46ccd541b3b.tar.gz
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-- completed:
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-- completed:
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-    url: https://github.com/NorfairKing/validity/archive/35bc8d45b27e6c21429e4b681b16e46ccd541b3b.tar.gz
-    name: genvalidity-bytestring
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-- completed:
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-- completed:
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-- completed:
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-    url: https://github.com/NorfairKing/validity/archive/35bc8d45b27e6c21429e4b681b16e46ccd541b3b.tar.gz
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-- completed:
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-- completed:
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-- completed:
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-- completed:
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+packages: []
 snapshots:
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diff --git a/test/Posix.hs b/test/Posix.hs
index d1b7818..a1b104d 100644
--- a/test/Posix.hs
+++ b/test/Posix.hs
@@ -30,6 +30,8 @@ spec =
      describe "Operations: stripProperPrefix" operationStripProperPrefix
      describe "Operations: isProperPrefixOf" operationIsProperPrefixOf
      describe "Operations: parent" operationParent
+     describe "Operations: splitDrive" operationSplitDrive
+     describe "Operations: isDrive" operationIsDrive
      describe "Operations: filename" operationFilename
      describe "Operations: dirname" operationDirname
      describe "Operations: extensions" (extensionOperations "/")
@@ -107,6 +109,24 @@ operationParent =
      it "parent \".\" == \".\""
         (parent $(mkRelDir ".") == $(mkRelDir "."))
 
+-- | The 'splitDrive' operation.
+operationSplitDrive :: Spec
+operationSplitDrive =
+  do it "splitDrive \"/dir\" == (\"/\", Just \"dir\")"
+        (splitDrive $(mkAbsDir "/dir") == ($(mkAbsDir "/"), Just $(mkRelDir "dir")))
+     it "splitDrive \"/file\" == (\"/\", Just \"file\")"
+        (splitDrive $(mkAbsFile "/file") == ($(mkAbsDir "/"), Just $(mkRelFile "file")))
+     it "splitDrive \"/\" == (\"/\", Nothing)"
+        (splitDrive $(mkAbsDir "/") == ($(mkAbsDir "/"), Nothing))
+
+-- | The 'isDrive' operation.
+operationIsDrive :: Spec
+operationIsDrive =
+  do it "isDrive \"/\" == True"
+        (isDrive $(mkAbsDir "/") == True)
+     it "isDrive \"/dir\" == False"
+        (isDrive $(mkAbsDir "/dir") == False)
+
 -- | The 'isProperPrefixOf' operation.
 operationIsProperPrefixOf :: Spec
 operationIsProperPrefixOf =
diff --git a/test/ValidityTest.hs b/test/ValidityTest.hs
index 6b65d48..a221e0b 100644
--- a/test/ValidityTest.hs
+++ b/test/ValidityTest.hs
@@ -50,6 +50,8 @@ spec =
       describe "stripProperPrefix" operationStripDir
       describe "isProperPrefixOf" operationIsParentOf
       describe "parent" operationParent
+      describe "splitDrive" operationSplitDrive
+      describe "takeDrive" operationTakeDrive
       describe "filename" operationFilename
       describe "dirname" operationDirname
     describe "Extensions" extensionsSpec
@@ -101,6 +103,22 @@ operationParent = do
   it "produces a valid path on when passed a valid rel directory path" $ do
     producesValid (parent :: Path Rel Dir -> Path Rel Dir)
 
+-- | The 'splitDrive' operation.
+operationSplitDrive :: Spec
+operationSplitDrive = do
+  it "produces valid paths on when passed a valid directory path" $ do
+    producesValid (splitDrive :: Path Abs Dir -> (Path Abs Dir, Maybe (Path Rel Dir)))
+  it "produces valid paths on when passed a valid file path" $ do
+    producesValid (splitDrive :: Path Abs File -> (Path Abs Dir, Maybe (Path Rel File)))
+
+-- | The 'takeDrive' operation.
+operationTakeDrive :: Spec
+operationTakeDrive = do
+  it "produces a valid path on when passed a valid directory path" $ do
+    producesValid (takeDrive :: Path Abs Dir -> Path Abs Dir)
+  it "produces a valid path on when passed a valid file path" $ do
+    producesValid (takeDrive :: Path Abs File -> Path Abs Dir)
+
 -- | The 'isProperPrefixOf' operation.
 operationIsParentOf :: Spec
 operationIsParentOf = do
diff --git a/test/Windows.hs b/test/Windows.hs
index a09318d..4eaa06a 100644
--- a/test/Windows.hs
+++ b/test/Windows.hs
@@ -30,6 +30,8 @@ spec =
      describe "Operations: stripProperPrefix" operationStripProperPrefix
      describe "Operations: isProperPrefixOf" operationIsProperPrefixOf
      describe "Operations: parent" operationParent
+     describe "Operations: splitDrive" operationSplitDrive
+     describe "Operations: isDrive" operationIsDrive
      describe "Operations: filename" operationFilename
      describe "Operations: dirname" operationDirname
      describe "Operations: extensions" (extensionOperations "C:\\")
@@ -118,6 +120,34 @@ operationParent =
      it "parent \".\" == \".\""
         (parent $(mkRelDir ".") == $(mkRelDir "."))
 
+-- | The 'splitDrive' operation.
+operationSplitDrive :: Spec
+operationSplitDrive =
+  do it "splitDrive \"C:/dir\" == (\"C:/\", Just \"dir\")"
+        (splitDrive $(mkAbsDir "C:/dir") == ($(mkAbsDir "C:/"), Just $(mkRelDir "dir")))
+     it "splitDrive \"C:\\dir\" == (\"C:\\\", Just \"dir\")"
+        (splitDrive $(mkAbsDir "C:\\dir") == ($(mkAbsDir "C:\\"), Just $(mkRelDir "dir")))
+     it "splitDrive \"C:/file\" == (\"C:/\", Just \"file\")"
+        (splitDrive $(mkAbsFile "C:/file") == ($(mkAbsDir "C:/"), Just $(mkRelFile "file")))
+     it "splitDrive \"C:\\file\" == (\"C:\\\", Just \"file\")"
+        (splitDrive $(mkAbsFile "C:\\file") == ($(mkAbsDir "C:\\"), Just $(mkRelFile "file")))
+     it "splitDrive \"C:/\" == (\"C:/\", Nothing)"
+        (splitDrive $(mkAbsDir "C:/") == ($(mkAbsDir "C:/"), Nothing))
+     it "splitDrive \"C:\\\" == (\"C:\\\", Nothing)"
+        (splitDrive $(mkAbsDir "C:\\") == ($(mkAbsDir "C:\\"), Nothing))
+
+-- | The 'isDrive' operation.
+operationIsDrive :: Spec
+operationIsDrive =
+  do it "isDrive \"C:/\" == True"
+        (isDrive $(mkAbsDir "C:/") == True)
+     it "isDrive \"C:\\\" == True"
+        (isDrive $(mkAbsDir "C:\\") == True)
+     it "isDrive \"C:/dir\" == False"
+        (isDrive $(mkAbsDir "C:/dir") == False)
+     it "isDrive \"C:\\dir\" == False"
+        (isDrive $(mkAbsDir "C:\\dir") == False)
+
 -- | The 'isProperPrefixOf' operation.
 operationIsProperPrefixOf :: Spec
 operationIsProperPrefixOf =