diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index e65a47d..6ed2be9 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -17,11 +17,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.8.1", "9.6.3", "9.4.8", "9.2.8", "9.0.2", "8.10.7"]
+        ghc: ["9.14.1", "9.12.4", "9.10.3", "9.8.4", "9.6.7", "9.4.8"]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         exclude:
+        # GHC 9.14.1 on Windows: ghc-paths' custom Setup is incompatible with
+        # the bundled Cabal 3.16, so the doctest dependency cannot be solved.
         - os: windows-latest
-          ghc: "9.4.2"
+          ghc: "9.14.1"
+        # GHC 9.4.8 on Windows: doctest cannot locate the chocolatey-installed
+        # ghc.exe, so the doctest suite fails to run.
+        - os: windows-latest
+          ghc: "9.4.8"
 
     env:
       # Modify this value to "invalidate" the cabal cache.
diff --git a/hw-string-parse.cabal b/hw-string-parse.cabal
index 912d870..817929f 100644
--- a/hw-string-parse.cabal
+++ b/hw-string-parse.cabal
@@ -13,7 +13,7 @@ maintainer:             newhoggy@gmail.com
 copyright:              2016-2021 John Ky
 license:                BSD-3-Clause
 license-file:           LICENSE
-tested-with:            GHC == 9.2.2, GHC == 9.0.2, GHC == 8.10.7, GHC == 8.8.4, GHC == 8.6.5
+tested-with:            GHC == 9.14.1, GHC == 9.12.4, GHC == 9.10.3, GHC == 9.8.4, GHC == 9.6.7, GHC == 9.4.8, GHC == 9.2.8, GHC == 9.0.2, GHC == 8.10.7, GHC == 8.8.4
 build-type:             Simple
 extra-source-files:     README.md
 
@@ -23,9 +23,9 @@ source-repository head
 
 common base                       { build-depends: base                       >= 4.11       && < 5      }
 
-common doctest                    { build-depends: doctest                    >= 0.16.2     && < 0.23   }
+common doctest                    { build-depends: doctest                    >= 0.16.2     && < 0.26   }
 common doctest-discover           { build-depends: doctest-discover           >= 0.2        && < 0.3    }
-common QuickCheck                 { build-depends: QuickCheck                                  < 2.15   }
+common QuickCheck                 { build-depends: QuickCheck                                  < 2.19   }
 common bytestring                 { build-depends: bytestring                                  < 0.13   }
 common hspec                      { build-depends: hspec                                       < 3      }
 common vector                     { build-depends: vector                                      < 0.14   }