diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a84e917..c57ab57 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,8 +15,8 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: [ubuntu-22.04, macOS-latest]
-        ghc: ['9.8', '9.6', '9.4', '9.2', '9.0', '8.10', '8.8', '8.6']
+        os: [ubuntu-24.04, macOS-latest]
+        ghc: ['9.10', '9.8', '9.6', '9.4', '9.2', '9.0', '8.10', '8.8', '8.6']
         exclude:
           - os: macos-latest
             ghc: '9.0'
@@ -42,7 +42,8 @@ jobs:
         path: |
           ~/.cabal/store
           dist-newstyle
-        key: ${{ runner.os }}-${{ matrix.ghc }}
+        key: ${{ runner.os }}-${{ matrix.ghc }}-${{ github.sha }}
+        restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-
     - name: Build
       run: |
         . ~/.ghcup/env
@@ -61,16 +62,15 @@ jobs:
         cabal haddock --disable-documentation
 
   centos7:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
-      image: centos:7
+      image: centos:9
     steps:
     - name: Install
       run: |
         yum install -y gcc gmp gmp-devel make ncurses ncurses-compat-libs xz perl autoconf
-        curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_GHC_VERSION=9.2.8 sh
-    - uses: actions/checkout@v3
-        # actions/checkout@v4 (using node20) does not run on image: centos:7
+        curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_GHC_VERSION=9.4.8 sh
+    - uses: actions/checkout@v4
     - name: Test
       run: |
         source ~/.ghcup/env
diff --git a/.gitignore b/.gitignore
index 1abc4c0..b9644ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,8 @@ dist-newstyle/
 ghc.mk
 include/HsUnixConfig.h
 include/HsUnixConfig.h.in
+.stack-work/
+stack*.yaml.lock
 unix.buildinfo
 tests/.hpc.*
 tests/*.eventlog
diff --git a/cabal.haskell-ci b/cabal.haskell-ci
deleted file mode 100644
index 6726f15..0000000
--- a/cabal.haskell-ci
+++ /dev/null
@@ -1,13 +0,0 @@
-unconstrained: False
-
-constraint-set bytestring-0.11
-  ghc: == 8.10.2
-  constraints: bytestring >=0.11 && <0.12
-
-constraint-set time-1.10
-  ghc: == 8.8.4
-  constraints: time >=1.10 && <1.11
-
-constraint-set time-1.11
-  ghc: == 8.6.5
-  constraints: time >=1.11 && <1.12