diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index f8262c9..503f968 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: 0.19.20241223
+# version: 0.19.20260209
 #
-# REGENDATA ("0.19.20241223",["github","cabal.project"])
+# REGENDATA ("0.19.20260209",["github","cabal.project"])
 #
 name: Haskell-CI
 on:
@@ -20,10 +20,15 @@ on:
   pull_request:
     branches:
       - master
+  merge_group:
+    branches:
+      - master
+  workflow_dispatch:
+    {}
 jobs:
   linux:
     name: Haskell-CI - Linux - ${{ matrix.compiler }}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     timeout-minutes:
       60
     container:
@@ -91,12 +96,12 @@ jobs:
       - name: Install GHCup
         run: |
           mkdir -p "$HOME/.ghcup/bin"
-          curl -sL https://downloads.haskell.org/ghcup/0.1.30.0/x86_64-linux-ghcup-0.1.30.0 > "$HOME/.ghcup/bin/ghcup"
+          curl -sL https://downloads.haskell.org/ghcup/0.1.50.1/x86_64-linux-ghcup-0.1.50.1 > "$HOME/.ghcup/bin/ghcup"
           chmod a+x "$HOME/.ghcup/bin/ghcup"
       - name: Install cabal-install
         run: |
-          "$HOME/.ghcup/bin/ghcup" install cabal 3.14.1.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          echo "CABAL=$HOME/.ghcup/bin/cabal-3.14.1.0 -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: |
@@ -172,7 +177,7 @@ 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
@@ -197,7 +202,11 @@ jobs:
           touch cabal.project.local
           echo "packages: ${PKGDIR_time_compat}" >> cabal.project
           echo "package time-compat" >> cabal.project
-          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          echo "    ghc-options: -Werror=missing-methods -Werror=missing-fields" >> cabal.project
+          if [ $((HCNUMVER >= 90400)) -ne 0 ] ; then echo "package time-compat" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90400)) -ne 0 ] ; then echo "    ghc-options: -Werror=unused-packages" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then echo "package time-compat" >> 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
           allow-newer: time
           EOF
diff --git a/time-compat.cabal b/time-compat.cabal
index c855ec0..5cc474c 100644
--- a/time-compat.cabal
+++ b/time-compat.cabal
@@ -132,9 +132,8 @@ test-suite main
   build-depends:
       base
     , deepseq
-    , QuickCheck        >=2.15.0.1 && <2.16
-    , random            >=1.2.1.3  && <1.3
-    , tagged            >=0.8.9    && <0.9
+    , QuickCheck        >=2.15.0.1 && <2.17
+    , random            >=1.2.1.3  && <1.4
     , tasty             >=1.5      && <1.6
     , tasty-hunit       >=0.10     && <0.11
     , tasty-quickcheck  >=0.11     && <0.12
@@ -146,7 +145,6 @@ test-suite main
         fail        >=4.9.0.0 && <4.10
       , semigroups  >=0.18.5  && <0.21
 
-  build-depends:      time
   main-is:            Main.hs
   other-modules:
     Test.Arbitrary