diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 7806149..18b884c 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.12.2", "9.10.2", "9.8.4", "9.6.7"]
+        ghc: ["9.14.1", "9.12.4", "9.10.3", "9.8.4", "9.6.7", "9.4.8"]
         os: [ubuntu-latest, windows-latest]
 
     env:
diff --git a/hw-dsv.cabal b/hw-dsv.cabal
index 31bec8a..2c96dd3 100644
--- a/hw-dsv.cabal
+++ b/hw-dsv.cabal
@@ -12,7 +12,7 @@ maintainer:             newhoggy@gmail.com
 copyright:              2018-2025 John Ky
 license:                BSD-3-Clause
 license-file:           LICENSE
-tested-with:            GHC == 9.12.2, GHC == 9.10.2, GHC == 9.8.4, GHC == 9.6.7
+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
                         ChangeLog.md