diff --git a/.ci/install-luarocks.sh b/.ci/install-luarocks.sh
deleted file mode 100755
index 4ead29d..0000000
--- a/.ci/install-luarocks.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env bash
-
-version=$LUAROCKS_VERSION
-luarocks_tarball=https://luarocks.github.io/luarocks/releases/luarocks-$version.tar.gz
-
-set -e
-
-# Do we already have the correct LuaRocks built?
-if [ -d "$HOME/luarocks/bin" ]; then
-    installed_version=$($HOME/luarocks/bin/luarocks --version | head -1 | awk '{print $2}')
-    echo "Need LuaRocks $version"
-    echo "Found LuaRocks $installed_version"
-
-    if [ "$installed_version" = "$version" ]; then
-        echo "Using cached LuaRocks directory"
-        exit 0
-    fi
-fi
-
-echo "Installing LuaRocks $version"
-
-mkdir -p "$HOME/luarocks"
-
-curl -L $luarocks_tarball | tar xz
-cd luarocks-$version
-./configure --prefix="$HOME/luarocks" "$@"
-make -j${JOBS} && make install
-
-# Clean-up build directory
-cd ../
-rm -rf luarocks-$version
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4c8f6b..18fc880 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,79 +1,38 @@
-name: CI
+name: "Unix build"
 
-on: [ push, pull_request ]
+on: [push, pull_request]
 
 jobs:
-  CI-Linux-LuaJIT:
-    name: "Linux x64 with LuaJIT"
-    runs-on: ubuntu-22.04
+  test:
+    runs-on: ubuntu-latest
 
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Install dependencies
-        run: |
-          # Use the official APT repositories from OpenResty to install LuaJIT
-          curl -sSL "https://openresty.org/package/pubkey.gpg" | sudo gpg --dearmor -o /usr/share/keyrings/openresty.gpg
-          echo "deb [signed-by=/usr/share/keyrings/openresty.gpg] https://openresty.org/package/ubuntu $(lsb_release -sc) main" | \
-            sudo tee /etc/apt/sources.list.d/openresty.list > /dev/null
-          # Install dependencies
-          sudo apt-get update
-          sudo apt-get install --no-install-recommends openresty libvips-dev
-
-      - name: Install LuaRocks
-        env:
-          LUAROCKS_VERSION: 3.9.2
-        run:
-          .ci/install-luarocks.sh
-            --with-lua=/usr/local/openresty/luajit/
-            --with-lua-include=/usr/local/openresty/luajit/include/luajit-2.1
-
-      - name: Prepare environment
-        run: |
-          echo "/usr/local/openresty/luajit/bin:$HOME/luarocks/bin" >> $GITHUB_PATH
-
-      - name: Install Lua modules
-        run: make dev
-
-      - name: Lint with luacheck
-        run: make lint
-
-      - name: Test with busted
-        run: make test
-
-  CI-Linux-Lua-54:
-    name: "Linux x64 with Lua 5.4"
-    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix:
+        luaVersion: ["5.1", "5.2", "5.3", "5.4", "luajit-2.1.0-beta3", "luajit-openresty"]
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Install dependencies
-        run: |
-          sudo apt install lua5.4 liblua5.4-dev libvips-dev
+    - uses: actions/checkout@v4
 
-      - name: Install LuaRocks
-        env:
-          LUAROCKS_VERSION: 3.9.2
-        run:
-          .ci/install-luarocks.sh
-            --with-lua=/usr/
-            --with-lua-include=/usr/include/lua5.4
+    - uses: leafo/gh-actions-lua@v9
+      with:
+        luaVersion: ${{ matrix.luaVersion }}
 
-      - name: Prepare environment
-        run: |
-          echo "/usr/bin:$HOME/luarocks/bin" >> $GITHUB_PATH
+    - uses: leafo/gh-actions-luarocks@v4
 
-      - name: Install Lua modules
-        run: make dev
+    - name: Lua dependencies
+      run: |
+        luarocks install busted
+        luarocks install luacheck
+        if [[ ${{ matrix.luaVersion }} == 5.* ]]; then luarocks install luaffi-tkl; fi
 
-      - name: Install ffi
-        run: make ffi
+    - name: Install libvips
+      run: |
+        sudo apt install --no-install-recommends libvips-dev
 
-      - name: Lint with luacheck
-        run: make lint
+    - name: Busted tests
+      run: |
+        busted .
 
-      - name: Test with busted
-        run: make test
+    - name: Linting tests
+        luacheck .