diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 705288a..52ba1b6 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: 0.19.20250605
+# version: 0.19.20260209
 #
-# REGENDATA ("0.19.20250605",["github","cabal.project"])
+# REGENDATA ("0.19.20260209",["github","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -20,6 +20,11 @@ on:
   pull_request:
     branches:
       - master
+  merge_group:
+    branches:
+      - master
+  workflow_dispatch:
+    {}
 jobs:
   linux:
     name: Haskell-CI - Linux - ${{ matrix.compiler }}
@@ -102,8 +107,8 @@ jobs:
           chmod a+x "$HOME/.ghcup/bin/ghcup"
       - name: Install cabal-install
         run: |
-          "$HOME/.ghcup/bin/ghcup" install cabal 3.14.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          echo "CABAL=$HOME/.ghcup/bin/cabal-3.14.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
+          "$HOME/.ghcup/bin/ghcup" install cabal 3.16.0.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.16.0.0 -vnormal+nowrap" >> "$GITHUB_ENV"
       - name: Install GHC (GHCup)
         if: matrix.setup-method == 'ghcup'
         run: |
@@ -179,7 +184,7 @@ jobs:
           chmod a+x $HOME/.cabal/bin/cabal-plan
           cabal-plan --version
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           path: source
       - name: initial cabal.project for sdist
@@ -212,11 +217,17 @@ jobs:
           echo "packages: ${PKGDIR_postgresql_libpq_pkgconfig}" >> cabal.project
           echo "packages: ${PKGDIR_postgresql_libpq_configure}" >> cabal.project
           echo "package postgresql-libpq" >> cabal.project
-          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          echo "    ghc-options: -Werror=missing-methods -Werror=missing-fields" >> cabal.project
           echo "package postgresql-libpq-pkgconfig" >> cabal.project
-          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          echo "    ghc-options: -Werror=missing-methods -Werror=missing-fields" >> cabal.project
           echo "package postgresql-libpq-configure" >> cabal.project
-          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          echo "    ghc-options: -Werror=missing-methods -Werror=missing-fields" >> cabal.project
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "package postgresql-libpq" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "    ghc-options: -Werror=incomplete-patterns -Werror=incomplete-uni-patterns" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "package postgresql-libpq-pkgconfig" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "    ghc-options: -Werror=incomplete-patterns -Werror=incomplete-uni-patterns" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "package postgresql-libpq-configure" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "    ghc-options: -Werror=incomplete-patterns -Werror=incomplete-uni-patterns" >> cabal.project ; fi
           cat >> cabal.project <<EOF
           EOF
           $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: any.$_ installed\n" unless /^(postgresql-libpq|postgresql-libpq-configure|postgresql-libpq-pkgconfig)$/; }' >> cabal.project.local
diff --git a/.github/workflows/simple.yml b/.github/workflows/simple.yml
index 99a2438..1f9f8b6 100644
--- a/.github/workflows/simple.yml
+++ b/.github/workflows/simple.yml
@@ -33,7 +33,7 @@ jobs:
           cabal-version: '3.10.2.0'
 
       - name: Set up PostgreSQL
-        uses: ikalnytskyi/action-setup-postgres@v6
+        uses: ikalnytskyi/action-setup-postgres@v8
         id: postgres
         with:
           username: ci
@@ -42,7 +42,7 @@ jobs:
           postgres-version: "14"
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Cache
         uses: actions/cache@v4
diff --git a/cabal.haskell-ci b/cabal.haskell-ci
index b0abf40..18bdd1f 100644
--- a/cabal.haskell-ci
+++ b/cabal.haskell-ci
@@ -2,5 +2,7 @@ branches:           master
 postgresql:         True
 apt:                libpq-dev
 
+error-unused-packages: False
+
 constraint-set pkg-config
   constraints: postgresql-libpq +use-pkg-config