diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 49a79e2..e952493 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
   test:
     strategy:
       matrix:
-        runner: [ubuntu-slim, ubuntu-latest]
+        runner: [ubuntu-slim, ubuntu-latest, ubuntu-24.04-arm, macos-latest, windows-latest]
     runs-on: ${{ matrix.runner }}
     steps:
       - uses: actions/checkout@v5
@@ -37,5 +37,5 @@ jobs:
       - uses: ./
         with:
           ssh-private-key: ${{ secrets.CI_DEPLOY_KEY_PRIVATE_KEY }}
-          fetch-github-host-keys: ${{ matrix.runner == 'ubuntu-slim' }}
-      - run: git clone git@github.com:tadodotcom/ssh-agent.git /tmp/ssh-agent-clone
\ No newline at end of file
+          fetch-github-host-keys: ${{ matrix.runner == 'ubuntu-slim' || matrix.runner == 'windows-latest' }}
+      - run: git clone git@github.com:tadodotcom/ssh-agent.git ssh-agent-clone
diff --git a/dist/index.js b/dist/index.js
index 5f871f9..e569738 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -3697,10 +3697,13 @@ try {
   if (fetchGithubHostKeys) {
     console.log("Fetching GitHub host keys");
     try {
-      const metaJson = child_process.execSync(
-        "curl --silent https://api.github.com/meta",
-        { encoding: "utf8" },
-      );
+      // Use curl which is available on all GitHub Actions runners (Linux, macOS, Windows)
+      const curlCmd =
+        process.platform === "win32"
+          ? "curl.exe --silent https://api.github.com/meta"
+          : "curl --silent https://api.github.com/meta";
+
+      const metaJson = child_process.execSync(curlCmd, { encoding: "utf8" });
 
       const meta = JSON.parse(metaJson);
       const knownHostsFile = `${homeSsh}/known_hosts`;
diff --git a/index.js b/index.js
index e754a3f..9d421ed 100644
--- a/index.js
+++ b/index.js
@@ -29,10 +29,13 @@ try {
   if (fetchGithubHostKeys) {
     console.log("Fetching GitHub host keys");
     try {
-      const metaJson = child_process.execSync(
-        "curl --silent https://api.github.com/meta",
-        { encoding: "utf8" },
-      );
+      // Use curl which is available on all GitHub Actions runners (Linux, macOS, Windows)
+      const curlCmd =
+        process.platform === "win32"
+          ? "curl.exe --silent https://api.github.com/meta"
+          : "curl --silent https://api.github.com/meta";
+
+      const metaJson = child_process.execSync(curlCmd, { encoding: "utf8" });
 
       const meta = JSON.parse(metaJson);
       const knownHostsFile = `${homeSsh}/known_hosts`;