diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 4989eb4..c3a1f36 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -1,30 +1,34 @@
-name: Haskell CI
-on:
-  - push
+# This file is generated by `generate.sh`.
+# Generated from https://github.com/bellroy/gha-workflows/tree/master/dhall/workflows/timeline/haskell-ci.dhall
+# Think twice before editing it directly.
 jobs:
   generate-matrix:
-    name: "Generate matrix from cabal"
+    name: Generate matrix from cabal
     outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
+      matrix: "${{ steps.set-matrix.outputs.matrix }}"
     runs-on: ubuntu-20.04
     steps:
-      - name: Extract the tested GHC versions
-        id: set-matrix
-        uses: kleidukos/get-tested@a0aa3f2d4ab0d10daa49dc9ee8c706d673fb0e02
+      - id: set-matrix
+        name: Extract the tested GHC versions
+        uses: "kleidukos/get-tested@a0aa3f2d4ab0d10daa49dc9ee8c706d673fb0e02"
         with:
           cabal-file: timeline.cabal
-          ubuntu-version: "20.04"
-          version: 0.1.7.1
+          ubuntu-version: '20.04'
+          version: '0.1.7.1'
+    timeout-minutes: 30
   tests:
-    name: ${{ matrix.ghc }} on ${{ matrix.os }}
-    needs: generate-matrix
-    runs-on: ${{ matrix.os }}
     container:
       image: buildpack-deps:jammy
-    strategy:
-      matrix: ${{ fromJSON(needs.generate-matrix.outputs.matrix) }}
+    name: "${{ matrix.ghc }} on ${{ matrix.os }}"
+    needs:
+      - generate-matrix
+    runs-on: "${{ matrix.os }}"
     steps:
-      - name: apt
+      - env:
+          HCKIND: ghc
+          HCNAME: "ghc-${{ matrix.ghc }}"
+          HCVER: "${{ matrix.ghc }}"
+        name: apt
         run: |
           apt-get update
           apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
@@ -33,11 +37,11 @@ jobs:
           chmod a+x "$HOME/.ghcup/bin/ghcup"
           "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
           "$HOME/.ghcup/bin/ghcup" install cabal 3.12.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-        env:
+      - env:
           HCKIND: ghc
-          HCNAME: ghc-${{ matrix.ghc }}
-          HCVER: ${{ matrix.ghc }}
-      - name: Set PATH and environment variables
+          HCNAME: "ghc-${{ matrix.ghc }}"
+          HCVER: "${{ matrix.ghc }}"
+        name: Set PATH and environment variables
         run: |
           echo "$HOME/.cabal/bin" >> $GITHUB_PATH
           echo "LANG=C.UTF-8" >> "$GITHUB_ENV"
@@ -58,13 +62,8 @@ jobs:
           echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
           echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
           echo "GHCJSARITH=0" >> "$GITHUB_ENV"
-        env:
-          HCKIND: ghc
-          HCNAME: ghc-${{ matrix.ghc }}
-          HCVER: ${{ matrix.ghc }}
       - name: env
-        run: |
-          env
+        run: env
       - name: write cabal config
         run: |
           mkdir -p $CABAL_DIR
@@ -95,13 +94,12 @@ jobs:
           $HC --print-project-git-commit-id || true
           $CABAL --version || true
       - name: update cabal index
-        run: |
-          $CABAL v2-update -v
-      - name: cache (tools)
-        uses: actions/cache/restore@v4
+        run: "$CABAL v2-update -v"
+      - name: "cache (tools)"
+        uses: "actions/cache/restore@v4"
         with:
-          key: ${{ runner.os }}-${{ matrix.ghc }}-tools-ac1dc7e1
-          path: ~/.haskell-ci-tools
+          key: "${{ runner.os }}-${{ matrix.ghc }}-tools-ac1dc7e1"
+          path: "~/.haskell-ci-tools"
       - name: install cabal-plan
         run: |
           mkdir -p $HOME/.cabal/bin
@@ -115,14 +113,14 @@ jobs:
         run: |
           $CABAL --store-dir=$HOME/.haskell-ci-tools/store v2-install $ARG_COMPILER --ignore-project -j2 doctest --constraint='doctest ^>=0.22.0'
           doctest --version
-      - name: save cache (tools)
-        uses: actions/cache/save@v4
-        if: always()
+      - if: "always()"
+        name: "save cache (tools)"
+        uses: "actions/cache/save@v4"
         with:
-          key: ${{ runner.os }}-${{ matrix.ghc }}-tools-ac1dc7e1
-          path: ~/.haskell-ci-tools
+          key: "${{ runner.os }}-${{ matrix.ghc }}-tools-ac1dc7e1"
+          path: "~/.haskell-ci-tools"
       - name: checkout
-        uses: actions/checkout@v4
+        uses: "actions/checkout@v4"
         with:
           path: source
       - name: initial cabal.project for sdist
@@ -140,12 +138,12 @@ jobs:
           find sdist -maxdepth 1 -type f -name '*.tar.gz' -exec tar -C $GITHUB_WORKSPACE/unpacked -xzvf {} \;
       - name: generate cabal.project
         run: |
-          PKGDIR_timeline="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/timeline-[0-9.]*')"
-          echo "PKGDIR_timeline=${PKGDIR_timeline}" >> "$GITHUB_ENV"
+          PKGDIR_PROJECT="$(find "$GITHUB_WORKSPACE/unpacked" -maxdepth 1 -type d -regex '.*/timeline-[0-9.]*')"
+          echo "PKGDIR_PROJECT=${PKGDIR_PROJECT}" >> "$GITHUB_ENV"
           rm -f cabal.project cabal.project.local
           touch cabal.project
           touch cabal.project.local
-          echo "packages: ${PKGDIR_timeline}" >> cabal.project
+          echo "packages: ${PKGDIR_PROJECT}" >> cabal.project
           echo "package timeline" >> cabal.project
           echo "    ghc-options: -Werror=missing-methods" >> cabal.project
           cat >> cabal.project <<EOF
@@ -158,11 +156,11 @@ jobs:
           $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
           cabal-plan
       - name: restore cache
-        uses: actions/cache/restore@v4
+        uses: "actions/cache/restore@v4"
         with:
-          key: ${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}
-          path: ~/.cabal/store
-          restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-
+          key: "${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}"
+          path: "~/.cabal/store"
+          restore-keys: "${{ runner.os }}-${{ matrix.ghc }}-"
       - name: install dependencies
         run: |
           $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --dependencies-only -j2 all
@@ -178,11 +176,11 @@ jobs:
           $CABAL v2-test $ARG_COMPILER $ARG_TESTS $ARG_BENCH all --test-show-details=direct
       - name: doctest
         run: |
-          cd ${PKGDIR_timeline} || false
+          cd ${PKGDIR_PROJECT} || false
           doctest  -XHaskell2010 src
       - name: cabal check
         run: |
-          cd ${PKGDIR_timeline} || false
+          cd ${PKGDIR_PROJECT} || false
           ${CABAL} -vnormal check
       - name: haddock
         run: |
@@ -191,9 +189,20 @@ jobs:
         run: |
           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()
+      - if: "always()"
+        name: save cache
+        uses: "actions/cache/save@v4"
         with:
-          key: ${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}
-          path: ~/.cabal/store
+          key: "${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}"
+          path: "~/.cabal/store"
+    strategy:
+      matrix:
+        include:
+          - "${{ (fromJSON(needs.generate-matrix.outputs.matrix)).include }}"
+    timeout-minutes: 30
+name: Haskell CI
+on:
+  push:
+    branches-ignore:
+      - "refs/tags/*_staging"
+      - "refs/tags/*_production"