diff --git a/dist/index.js b/dist/index.js
index ad156132..83c4d165 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -455,7 +455,7 @@ async function getScript(filename, version, os_version) {
     const coverage_driver = await utils.getInput('coverage', false);
     const tools_csv = await utils.getInput('tools', false);
     const script_path = path_1.default.join(__dirname, '../src/scripts', filename);
-    let script = fs_1.default.readFileSync(script_path, 'utf8');
+    let script = '\n';
     if (extension_csv) {
         script += await extensions.addExtension(extension_csv, version, os_version);
     }
@@ -468,7 +468,7 @@ async function getScript(filename, version, os_version) {
     }
     script += '\n' + (await utils.stepLog(`Sponsor setup-php`, os_version));
     script += '\n' + (await utils.addLog('$tick', 'setup-php', url, os_version));
-    fs_1.default.writeFileSync(script_path, script, { mode: 0o755 });
+    fs_1.default.appendFileSync(script_path, script, { mode: 0o755 });
     return script_path;
 }
 exports.getScript = getScript;
diff --git a/src/install.ts b/src/install.ts
index 40e79a96..b9a10118 100644
--- a/src/install.ts
+++ b/src/install.ts
@@ -28,7 +28,7 @@ export async function getScript(
   const coverage_driver: string = await utils.getInput('coverage', false);
   const tools_csv: string = await utils.getInput('tools', false);
   const script_path = path.join(__dirname, '../src/scripts', filename);
-  let script: string = fs.readFileSync(script_path, 'utf8');
+  let script = '\n';
   if (extension_csv) {
     script += await extensions.addExtension(extension_csv, version, os_version);
   }
@@ -42,7 +42,7 @@ export async function getScript(
   script += '\n' + (await utils.stepLog(`Sponsor setup-php`, os_version));
   script += '\n' + (await utils.addLog('$tick', 'setup-php', url, os_version));
 
-  fs.writeFileSync(script_path, script, {mode: 0o755});
+  fs.appendFileSync(script_path, script, {mode: 0o755});
 
   return script_path;
 }