diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 55d49c7..cea2a1f 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: 0.14.1
+# version: 0.15.20230321
 #
-# REGENDATA ("0.14.1",["github","cabal.project"])
+# REGENDATA ("0.15.20230321",["github","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -28,9 +28,19 @@ jobs:
     strategy:
       matrix:
         include:
-          - compiler: ghc-9.2.1
+          - compiler: ghc-9.6.1
             compilerKind: ghc
-            compilerVersion: 9.2.1
+            compilerVersion: 9.6.1
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.4.4
+            compilerKind: ghc
+            compilerVersion: 9.4.4
+            setup-method: ghcup
+            allow-failure: false
+          - compiler: ghc-9.2.7
+            compilerKind: ghc
+            compilerVersion: 9.2.7
             setup-method: ghcup
             allow-failure: false
           - compiler: ghc-9.0.2
@@ -86,18 +96,18 @@ jobs:
           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 > "$HOME/.ghcup/bin/ghcup"
+            curl -sL https://downloads.haskell.org/ghcup/0.1.19.2/x86_64-linux-ghcup-0.1.19.2 > "$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
+            "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
+            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
             apt-add-repository -y 'ppa:hvr/ghc'
             apt-get update
             apt-get install -y "$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"
+            curl -sL https://downloads.haskell.org/ghcup/0.1.19.2/x86_64-linux-ghcup-0.1.19.2 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
-            "$HOME/.ghcup/bin/ghcup" install cabal 3.6.2.0
+            "$HOME/.ghcup/bin/ghcup" install cabal 3.10.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
           HCKIND: ${{ matrix.compilerKind }}
@@ -115,13 +125,13 @@ jobs:
             echo "HC=$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"
+            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.1.0 -vnormal+nowrap" >> "$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" >> "$GITHUB_ENV"
+            echo "CABAL=$HOME/.ghcup/bin/cabal-3.10.1.0 -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))')
@@ -180,7 +190,7 @@ jobs:
           chmod a+x $HOME/.cabal/bin/cabal-plan
           cabal-plan --version
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           path: source
       - name: initial cabal.project for sdist
@@ -192,14 +202,6 @@ jobs:
         run: |
           mkdir -p sdist
           $CABAL sdist all --output-dir $GITHUB_WORKSPACE/sdist
-      - name: sdist for hackage
-        run: |
-          $CABAL sdist all --output-dir /tmp/sdist
-      - name: sdist upload for hackage
-        uses: actions/upload-artifact@v2
-        with:
-          name: hackage-sdist
-          path: /tmp/sdist
       - name: unpack
         run: |
           mkdir -p unpacked
@@ -224,8 +226,8 @@ jobs:
         run: |
           $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
           cabal-plan
-      - name: cache
-        uses: actions/cache@v2
+      - name: restore cache
+        uses: actions/cache/restore@v3
         with:
           key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
           path: ~/.cabal/store
@@ -249,8 +251,14 @@ jobs:
           ${CABAL} -vnormal check
       - name: haddock
         run: |
-          $CABAL v2-haddock $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
+          $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
       - name: unconstrained build
         run: |
           rm -f cabal.project.local
-          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
\ No newline at end of file
+          $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
+      - name: save cache
+        uses: actions/cache/save@v3
+        if: always()
+        with:
+          key: ${{ runner.os }}-${{ matrix.compiler }}-${{ github.sha }}
+          path: ~/.cabal/store
diff --git a/.gitignore b/.gitignore
index 9b1c8b1..3487637 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /dist
+/dist-newstyle/
diff --git a/clock.cabal b/clock.cabal
index 4c7910d..1663720 100644
--- a/clock.cabal
+++ b/clock.cabal
@@ -54,7 +54,9 @@ category:      System
 build-type:    Simple
 
 tested-with:
-  GHC == 9.2.1
+  GHC == 9.6.1
+  GHC == 9.4.4
+  GHC == 9.2.7
   GHC == 9.0.2
   GHC == 8.10.7
   GHC == 8.8.4
@@ -71,7 +73,7 @@ extra-source-files:
 
 source-repository head
     type:      git
-    location:  git://github.com/corsis/clock.git
+    location:  https://github.com/corsis/clock.git
 
 
 flag llvm