diff --git a/.github/workflows/haskell-ci-hackage.patch b/.github/workflows/haskell-ci-hackage.patch
index 34d1cdf..4164486 100644
--- a/.github/workflows/haskell-ci-hackage.patch
+++ b/.github/workflows/haskell-ci-hackage.patch
@@ -42,9 +42,9 @@ set in GitHub repository secrets.
              setup-method: ghcup
              allow-failure: false
 +            upload: true
-           - compiler: ghc-9.6.3
+           - compiler: ghc-9.6.4
              compilerKind: ghc
-             compilerVersion: 9.6.3
+             compilerVersion: 9.6.4
 @@ -257,6 +265,10 @@
        - name: haddock
          run: |
diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 7f45179..413c802 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/haskell-CI/haskell-ci
 #
-# version: 0.17.20231203
+# version: 0.17.20240109
 #
-# REGENDATA ("0.17.20231203",["github","cabal.project"])
+# REGENDATA ("0.17.20240109",["github","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -41,9 +41,9 @@ jobs:
             setup-method: ghcup
             allow-failure: false
             upload: true
-          - compiler: ghc-9.6.3
+          - compiler: ghc-9.6.4
             compilerKind: ghc
-            compilerVersion: 9.6.3
+            compilerVersion: 9.6.4
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.4.8
diff --git a/xmonad.cabal b/xmonad.cabal
index 5aceb62..7a9fcb9 100644
--- a/xmonad.cabal
+++ b/xmonad.cabal
@@ -27,7 +27,7 @@ author:             Spencer Janssen, Don Stewart, Adam Vogt, David Roundy, Jason
                     Ondřej Súkup, Paul Hebble, Shachaf Ben-Kiki, Siim Põder, Tim McIver,
                     Trevor Elliott, Wouter Swierstra, Conrad Irwin, Tim Thelion, Tony Zorman
 maintainer:         xmonad@haskell.org
-tested-with:        GHC == 8.6.5 || == 8.8.4 || == 8.10.7 || == 9.0.2 || == 9.2.8 || == 9.4.8 || == 9.6.3 || == 9.8.1
+tested-with:        GHC == 8.6.5 || == 8.8.4 || == 8.10.7 || == 9.0.2 || == 9.2.8 || == 9.4.8 || == 9.6.4 || == 9.8.1
 category:           System
 homepage:           http://xmonad.org
 bug-reports:        https://github.com/xmonad/xmonad/issues