diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 232c115..79061e7 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 '--config=cabal.haskell-ci' 'cabal.project'
+#   haskell-ci 'github' '--config=cabal.haskell-ci' 'cabal.project'
 #
 # 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: 0.19.20241021
+# version: 0.19.20241202
 #
-# REGENDATA ("0.19.20241021",["--config=cabal.haskell-ci","cabal.project"])
+# REGENDATA ("0.19.20241202",["github","--config=cabal.haskell-ci","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -23,15 +23,15 @@ jobs:
     timeout-minutes:
       60
     container:
-      image: buildpack-deps:jammy
+      image: buildpack-deps:focal
     continue-on-error: ${{ matrix.allow-failure }}
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.12.20241014
+          - compiler: ghc-9.12.0.20241128
             compilerKind: ghc
-            compilerVersion: 9.12.20241014
-            setup-method: ghcup
+            compilerVersion: 9.12.0.20241128
+            setup-method: ghcup-prerelease
             allow-failure: false
           - compiler: ghc-9.10.1
             compilerKind: ghc
@@ -95,41 +95,60 @@ jobs:
             allow-failure: false
       fail-fast: false
     steps:
-      - name: apt
+      - name: apt-get install
         run: |
           apt-get update
           apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5 libnuma-dev
+      - name: Install GHCup
+        run: |
           mkdir -p "$HOME/.ghcup/bin"
           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)
+      - name: Install cabal-install
+        run: |
           "$HOME/.ghcup/bin/ghcup" install cabal 3.12.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.12.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+      - name: Install GHC (GHCup)
+        if: matrix.setup-method == 'ghcup'
+        run: |
+          "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
+          HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
+          HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
+          HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
+          echo "HC=$HC" >> "$GITHUB_ENV"
+          echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
+          echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
         env:
           HCKIND: ${{ matrix.compilerKind }}
           HCNAME: ${{ matrix.compiler }}
           HCVER: ${{ matrix.compilerVersion }}
-      - name: Set PATH and environment variables
+      - name: Install GHC (GHCup prerelease)
+        if: matrix.setup-method == 'ghcup-prerelease'
         run: |
-          echo "$HOME/.cabal/bin" >> $GITHUB_PATH
-          echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
-          echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
-          echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
-          HCDIR=/opt/$HCKIND/$HCVER
+          "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.8.yaml;
+          "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
           HC=$("$HOME/.ghcup/bin/ghcup" whereis ghc "$HCVER")
           HCPKG=$(echo "$HC" | sed 's#ghc$#ghc-pkg#')
           HADDOCK=$(echo "$HC" | sed 's#ghc$#haddock#')
           echo "HC=$HC" >> "$GITHUB_ENV"
           echo "HCPKG=$HCPKG" >> "$GITHUB_ENV"
           echo "HADDOCK=$HADDOCK" >> "$GITHUB_ENV"
-          echo "CABAL=$HOME/.ghcup/bin/cabal-3.12.1.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+        env:
+          HCKIND: ${{ matrix.compilerKind }}
+          HCNAME: ${{ matrix.compiler }}
+          HCVER: ${{ matrix.compilerVersion }}
+      - name: Set PATH and environment variables
+        run: |
+          echo "$HOME/.cabal/bin" >> $GITHUB_PATH
+          echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
+          echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
+          echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$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"
           echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV"
           if [ $((HCNUMVER >= 91200)) -ne 0 ] ; then echo "HEADHACKAGE=true" >> "$GITHUB_ENV" ; else echo "HEADHACKAGE=false" >> "$GITHUB_ENV" ; fi
           echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
-          echo "GHCJSARITH=0" >> "$GITHUB_ENV"
         env:
           HCKIND: ${{ matrix.compilerKind }}
           HCNAME: ${{ matrix.compiler }}
@@ -260,8 +279,8 @@ jobs:
           rm -f cabal.project.local
           $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
       - name: save cache
-        uses: actions/cache/save@v4
         if: always()
+        uses: actions/cache/save@v4
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
           path: ~/.cabal/store
diff --git a/cabal.haskell-ci b/cabal.haskell-ci
index 20c4040..f36304e 100644
--- a/cabal.haskell-ci
+++ b/cabal.haskell-ci
@@ -1 +1 @@
-distribution: jammy
+distribution: focal
diff --git a/cabal.project b/cabal.project
index e6fdbad..f810855 100644
--- a/cabal.project
+++ b/cabal.project
@@ -1 +1,12 @@
 packages: .
+
+tests: True
+
+if impl (ghc >= 9.12)
+  allow-newer:
+    , splitmix:base
+    , th-abstraction:template-haskell
+    , th-compat:template-haskell
+    , th-expand-syns:template-haskell
+    , th-lift:template-haskell
+    , th-orphans:template-haskell
diff --git a/th-desugar.cabal b/th-desugar.cabal
index ad35aa7..d1d26db 100644
--- a/th-desugar.cabal
+++ b/th-desugar.cabal
@@ -50,7 +50,7 @@ library
   build-depends:
       base >= 4.9 && < 5,
       ghc-prim,
-      template-haskell >= 2.11 && < 2.23,
+      template-haskell >= 2.11 && < 2.24,
       containers >= 0.5,
       mtl >= 2.1 && < 2.4,
       ordered-containers >= 0.2.2,