diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 87b55f4..a5b8a7e 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: 0.11.20210220
+# version: 0.13.20211030
 #
-# REGENDATA ("0.11.20210220",["--no-cabal-check","github","lucid.cabal"])
+# REGENDATA ("0.13.20211030",["--no-cabal-check","github","lucid.cabal"])
 #
 name: Haskell-CI
 on:
@@ -22,7 +22,7 @@ on:
       - master
 jobs:
   linux:
-    name: Haskell-CI - Linux - GHC ${{ matrix.ghc }}
+    name: Haskell-CI - Linux - ${{ matrix.compiler }}
     runs-on: ubuntu-18.04
     container:
       image: buildpack-deps:bionic
@@ -30,53 +30,108 @@ jobs:
     strategy:
       matrix:
         include:
-          - ghc: 9.0.1
+          - compiler: ghc-9.2.1
+            compilerKind: ghc
+            compilerVersion: 9.2.1
+            setup-method: ghcup
             allow-failure: false
-          - ghc: 8.10.4
+          - compiler: ghc-9.0.1
+            compilerKind: ghc
+            compilerVersion: 9.0.1
+            setup-method: hvr-ppa
             allow-failure: false
-          - ghc: 8.8.4
+          - compiler: ghc-8.10.7
+            compilerKind: ghc
+            compilerVersion: 8.10.7
+            setup-method: ghcup
             allow-failure: false
-          - ghc: 8.6.5
+          - compiler: ghc-8.8.4
+            compilerKind: ghc
+            compilerVersion: 8.8.4
+            setup-method: hvr-ppa
             allow-failure: false
-          - ghc: 8.4.4
+          - compiler: ghc-8.6.5
+            compilerKind: ghc
+            compilerVersion: 8.6.5
+            setup-method: hvr-ppa
             allow-failure: false
-          - ghc: 8.2.2
+          - compiler: ghc-8.4.4
+            compilerKind: ghc
+            compilerVersion: 8.4.4
+            setup-method: hvr-ppa
             allow-failure: false
-          - ghc: 8.0.2
+          - compiler: ghc-8.2.2
+            compilerKind: ghc
+            compilerVersion: 8.2.2
+            setup-method: hvr-ppa
+            allow-failure: false
+          - compiler: ghc-8.0.2
+            compilerKind: ghc
+            compilerVersion: 8.0.2
+            setup-method: hvr-ppa
+            allow-failure: false
+          - compiler: ghc-7.10.3
+            compilerKind: ghc
+            compilerVersion: 7.10.3
+            setup-method: hvr-ppa
             allow-failure: false
-          - ghc: 7.10.3
-            allow-failure: true
       fail-fast: false
     steps:
       - name: apt
         run: |
           apt-get update
-          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common
-          apt-add-repository -y 'ppa:hvr/ghc'
-          apt-get update
-          apt-get install -y ghc-$GHC_VERSION cabal-install-3.4
+          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
+          if [ "${{ matrix.setup-method }}" = ghcup ]; then
+            mkdir -p "$HOME/.ghcup/bin"
+            curl -sL https://downloads.haskell.org/ghcup/0.1.17.3/x86_64-linux-ghcup-0.1.17.3 > "$HOME/.ghcup/bin/ghcup"
+            chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER"
+            "$HOME/.ghcup/bin/ghcup" install cabal 3.6.2.0
+          else
+            apt-add-repository -y 'ppa:hvr/ghc'
+            apt-get update
+            apt-get install -y "$HCNAME"
+            mkdir -p "$HOME/.ghcup/bin"
+            curl -sL https://downloads.haskell.org/ghcup/0.1.17.3/x86_64-linux-ghcup-0.1.17.3 > "$HOME/.ghcup/bin/ghcup"
+            chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" install cabal 3.6.2.0
+          fi
         env:
-          GHC_VERSION: ${{ matrix.ghc }}
+          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" >> $GITHUB_ENV
-          HC=/opt/ghc/$GHC_VERSION/bin/ghc
-          echo "HC=$HC" >> $GITHUB_ENV
-          echo "HCPKG=/opt/ghc/$GHC_VERSION/bin/ghc-pkg" >> $GITHUB_ENV
-          echo "HADDOCK=/opt/ghc/$GHC_VERSION/bin/haddock" >> $GITHUB_ENV
-          echo "CABAL=/opt/cabal/3.4/bin/cabal -vnormal+nowrap" >> $GITHUB_ENV
+          echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
+          echo "CABAL_DIR=$HOME/.cabal" >> "$GITHUB_ENV"
+          echo "CABAL_CONFIG=$HOME/.cabal/config" >> "$GITHUB_ENV"
+          HCDIR=/opt/$HCKIND/$HCVER
+          if [ "${{ matrix.setup-method }}" = ghcup ]; then
+            HC=$HOME/.ghcup/bin/$HCKIND-$HCVER
+            echo "HC=$HC" >> "$GITHUB_ENV"
+            echo "HCPKG=$HOME/.ghcup/bin/$HCKIND-pkg-$HCVER" >> "$GITHUB_ENV"
+            echo "HADDOCK=$HOME/.ghcup/bin/haddock-$HCVER" >> "$GITHUB_ENV"
+            echo "CABAL=$HOME/.ghcup/bin/cabal-3.6.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+          else
+            HC=$HCDIR/bin/$HCKIND
+            echo "HC=$HC" >> "$GITHUB_ENV"
+            echo "HCPKG=$HCDIR/bin/$HCKIND-pkg" >> "$GITHUB_ENV"
+            echo "HADDOCK=$HCDIR/bin/haddock" >> "$GITHUB_ENV"
+            echo "CABAL=$HOME/.ghcup/bin/cabal-3.6.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+          fi
+
           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
-          if [ $((HCNUMVER < 90000)) -ne 0 ] ; then echo "ARG_BENCH=--enable-benchmarks" >> $GITHUB_ENV ; else echo "ARG_BENCH=--disable-benchmarks" >> $GITHUB_ENV ; fi
-          echo "HEADHACKAGE=false" >> $GITHUB_ENV
-          echo "ARG_COMPILER=--ghc --with-compiler=$HC" >> $GITHUB_ENV
-          echo "GHCJSARITH=0" >> $GITHUB_ENV
+          echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
+          echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
+          if [ $((HCNUMVER < 90000)) -ne 0 ] ; then echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV" ; else echo "ARG_BENCH=--disable-benchmarks" >> "$GITHUB_ENV" ; fi
+          echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
+          echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
+          echo "GHCJSARITH=0" >> "$GITHUB_ENV"
         env:
-          GHC_VERSION: ${{ matrix.ghc }}
+          HCKIND: ${{ matrix.compilerKind }}
+          HCNAME: ${{ matrix.compiler }}
+          HCVER: ${{ matrix.compilerVersion }}
       - name: env
         run: |
           env
@@ -137,7 +192,8 @@ jobs:
       - name: generate cabal.project
         run: |
           PKGDIR_lucid="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/lucid-[0-9.]*')"
-          echo "PKGDIR_lucid=${PKGDIR_lucid}" >> $GITHUB_ENV
+          echo "PKGDIR_lucid=${PKGDIR_lucid}" >> "$GITHUB_ENV"
+          rm -f cabal.project cabal.project.local
           touch cabal.project
           touch cabal.project.local
           echo "packages: ${PKGDIR_lucid}" >> cabal.project
@@ -155,9 +211,9 @@ jobs:
       - name: cache
         uses: actions/cache@v2
         with:
-          key: ${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}
+          key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
           path: ~/.cabal/store
-          restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-
+          restore-keys: ${{ runner.os }}-${{ matrix.compiler }}-
       - name: install dependencies
         run: |
           $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --dependencies-only -j2 all
diff --git a/lucid.cabal b/lucid.cabal
index 89550c3..06c1ddc 100644
--- a/lucid.cabal
+++ b/lucid.cabal
@@ -21,7 +21,7 @@ category:            Web
 build-type:          Simple
 cabal-version:       >=1.10
 extra-source-files:  README.md, CHANGELOG.md
-tested-with:         GHC==7.10.3,GHC==8.0.2,GHC==8.2.2,GHC==8.4.4,GHC==8.6.5,GHC==8.8.4,GHC==8.10.4,GHC==9.0.1
+tested-with:         GHC==7.10.3,GHC==8.0.2,GHC==8.2.2,GHC==8.4.4,GHC==8.6.5,GHC==8.8.4,GHC==8.10.7,GHC==9.0.1,GHC==9.2.1
 
 library
   default-language:  Haskell2010
@@ -33,7 +33,7 @@ library
                      Lucid.Bootstrap
 
   -- GHC boot libraries
-  build-depends:     base                   >=4.8      && <4.16
+  build-depends:     base                   >=4.8      && <4.17
                    , bytestring             >=0.10.6.0
                    , containers             >=0.5.6.2
                    , transformers           >=0.4.2.0