diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 2a2cb50..8b4878e 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -1,6 +1,6 @@
 # This GitHub workflow config has been generated by a script via
 #
-#   haskell-ci 'github' '--hlint' '--hlint-job=9.4.8' '--doctest' '--doctest-version=^>= 0.22' '--installed=+all -Cabal' 'cabal2spec.cabal'
+#   haskell-ci '--doctest' '--doctest-version=^>= 0.22' '--installed=+all -Cabal' 'github' 'cabal2spec.cabal'
 #
 # To regenerate the script (for example after adjusting tested-with) run
 #
@@ -8,9 +8,9 @@
 #
 # For more information, see https://github.com/haskell-CI/haskell-ci
 #
-# version: 0.19.20240316
+# version: 0.19.20240708
 #
-# REGENDATA ("0.19.20240316",["github","--hlint","--hlint-job=9.4.8","--doctest","--doctest-version=^>= 0.22","--installed=+all -Cabal","cabal2spec.cabal"])
+# REGENDATA ("0.19.20240708",["--doctest","--doctest-version=^>= 0.22","--installed=+all -Cabal","github","cabal2spec.cabal"])
 #
 name: Haskell-CI
 on:
@@ -23,7 +23,7 @@ jobs:
     timeout-minutes:
       60
     container:
-      image: buildpack-deps:bionic
+      image: buildpack-deps:jammy
     continue-on-error: ${{ matrix.allow-failure }}
     strategy:
       matrix:
@@ -55,11 +55,10 @@ jobs:
           apt-get update
           apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
           mkdir -p "$HOME/.ghcup/bin"
-          curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
+          curl -sL https://downloads.haskell.org/ghcup/0.1.30.0/x86_64-linux-ghcup-0.1.30.0 > "$HOME/.ghcup/bin/ghcup"
           chmod a+x "$HOME/.ghcup/bin/ghcup"
-          "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml;
           "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
-          "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
+          "$HOME/.ghcup/bin/ghcup" install cabal 3.12.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
         env:
           HCKIND: ${{ matrix.compilerKind }}
           HCNAME: ${{ matrix.compiler }}
@@ -77,7 +76,7 @@ jobs:
           echo "HC=$HC" >> "$GITHUB_ENV"
           echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
           echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
-          echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.12.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
           HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\d+)\.(\d+)\.(\d+)(\.(\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')
           echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
           echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
@@ -125,9 +124,9 @@ jobs:
         run: |
           $CABAL v2-update -v
       - name: cache (tools)
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
-          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-368d1a36
+          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-1cf0e533
           path: ~/.haskell-ci-tools
       - name: install cabal-plan
         run: |
@@ -142,20 +141,14 @@ jobs:
         run: |
           $CABAL --store-dir=$HOME/.haskell-ci-tools/store v2-install $ARG_COMPILER --ignore-project -j2 doctest --constraint='doctest ^>=0.22'
           doctest --version
-      - name: install hlint
-        run: |
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then HLINTVER=$(cd /tmp && (${CABAL} v2-install -v $ARG_COMPILER --dry-run hlint  --constraint='hlint >=3.5 && <3.6' |  perl -ne 'if (/\bhlint-(\d+(\.\d+)*)\b/) { print "$1"; last; }')); echo "HLint version $HLINTVER" ; fi
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then if [ ! -e $HOME/.haskell-ci-tools/hlint-$HLINTVER/hlint ]; then echo "Downloading HLint version $HLINTVER"; mkdir -p $HOME/.haskell-ci-tools; curl --write-out 'Status Code: %{http_code} Redirects: %{num_redirects} Total time: %{time_total} Total Dsize: %{size_download}\n' --silent --location --output $HOME/.haskell-ci-tools/hlint-$HLINTVER.tar.gz "https://github.com/ndmitchell/hlint/releases/download/v$HLINTVER/hlint-$HLINTVER-x86_64-linux.tar.gz"; tar -xzv -f $HOME/.haskell-ci-tools/hlint-$HLINTVER.tar.gz -C $HOME/.haskell-ci-tools; fi ; fi
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then mkdir -p $CABAL_DIR/bin && ln -sf "$HOME/.haskell-ci-tools/hlint-$HLINTVER/hlint" $CABAL_DIR/bin/hlint ; fi
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then hlint --version ; fi
       - name: save cache (tools)
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         if: always()
         with:
-          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-368d1a36
+          key: ${{ runner.os }}-${{ matrix.compiler }}-tools-1cf0e533
           path: ~/.haskell-ci-tools
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: source
       - name: initial cabal.project for sdist
@@ -183,7 +176,7 @@ jobs:
           echo "    ghc-options: -Werror=missing-methods" >> cabal.project
           cat >> cabal.project <<EOF
           EOF
-          $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(Cabal|cabal2spec)$/; }' >> cabal.project.local
+          $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: any.$_ installed\n" unless /^(Cabal|cabal2spec)$/; }' >> cabal.project.local
           cat cabal.project
           cat cabal.project.local
       - name: dump install plan
@@ -191,7 +184,7 @@ jobs:
           $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
           cabal-plan
       - name: restore cache
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
           path: ~/.cabal/store
@@ -213,10 +206,6 @@ jobs:
         run: |
           cd ${PKGDIR_cabal2spec} || false
           doctest  -XHaskell2010 src
-      - name: hlint
-        run: |
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then (cd ${PKGDIR_cabal2spec} && hlint -XHaskell2010 src) ; fi
-          if [ $((HCNUMVER >= 90400 && HCNUMVER < 90600)) -ne 0 ] ; then (cd ${PKGDIR_cabal2spec} && hlint -XHaskell2010 cabal2spec) ; fi
       - name: cabal check
         run: |
           cd ${PKGDIR_cabal2spec} || false
@@ -229,7 +218,7 @@ jobs:
           rm -f cabal.project.local
           $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
       - name: save cache
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         if: always()
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
diff --git a/.github/workflows/hlint.yml b/.github/workflows/hlint.yml
new file mode 100644
index 0000000..addac4c
--- /dev/null
+++ b/.github/workflows/hlint.yml
@@ -0,0 +1,30 @@
+# .github/workflows/hlint.yml
+
+name: HLint
+on:
+  - push
+  - pull_request
+jobs:
+  hlint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: 'Set up HLint'
+      uses: haskell-actions/hlint-setup@v2
+      with:
+        version: '3.8'
+
+    - name: 'Run HLint (src)'
+      uses: haskell-actions/hlint-run@v2
+      with:
+        path: src/
+        fail-on: suggestion
+
+    - name: 'Run HLint (test)'
+      uses: haskell-actions/hlint-run@v2
+      with:
+        path: test/
+        fail-on: suggestion