diff --git a/dist/index.js b/dist/index.js
index 306bc13..92fb69d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -4039,7 +4039,7 @@ async function run() {
         fs_1.default.appendFileSync(SSH_CONFIG_PATH, SSH_CONFIG);
         // sshKey.split(/(?=-----BEGIN)/).forEach(function (key) {
         child_process_1.default.execFileSync('ssh-add', ['-'], {
-            input: sshKey
+            input: sshKey + '\n'
         });
         fs_1.default.writeFileSync(`${SSH_KEY_PATH}`, sshKey, {
             mode: '600'
diff --git a/src/main.ts b/src/main.ts
index 4a3cebf..d80a0a1 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -67,7 +67,7 @@ export async function run(): Promise<void> {
 
     // sshKey.split(/(?=-----BEGIN)/).forEach(function (key) {
     child_process.execFileSync('ssh-add', ['-'], {
-      input: sshKey
+      input: sshKey + '\n'
     })
     fs.writeFileSync(`${SSH_KEY_PATH}`, sshKey, {
       mode: '600'