diff --git a/apps/assets/automations/base/manager.py b/apps/assets/automations/base/manager.py
index 084ac0c82..e9cfb84e3 100644
--- a/apps/assets/automations/base/manager.py
+++ b/apps/assets/automations/base/manager.py
@@ -13,7 +13,7 @@ from sshtunnel import SSHTunnelForwarder, BaseSSHTunnelForwarderError
 
 from assets.automations.methods import platform_automation_methods
 from common.utils import get_logger, lazyproperty
-from common.utils import ssh_pubkey_gen, ssh_key_string_to_obj
+from common.utils import ssh_pubkey_gen, is_openssh_format_key
 from ops.ansible import JMSInventory, PlaybookRunner, DefaultCallback
 
 logger = get_logger(__name__)
@@ -127,7 +127,13 @@ class BasePlaybookManager:
         key_path = os.path.join(path_dir, key_name)
 
         if not os.path.exists(key_path):
-            ssh_key_string_to_obj(secret, password=None).write_private_key_file(key_path)
+            # https://github.com/ansible/ansible-runner/issues/544
+            # ssh requires OpenSSH format keys to have a full ending newline.
+            # It does not require this for old-style PEM keys.
+            with open(key_path, 'w') as f:
+                f.write(secret)
+                if is_openssh_format_key(secret):
+                    f.write("\n")
             os.chmod(key_path, 0o400)
         return key_path
 
diff --git a/apps/common/utils/encode.py b/apps/common/utils/encode.py
index 36cd4f224..5a48261da 100644
--- a/apps/common/utils/encode.py
+++ b/apps/common/utils/encode.py
@@ -98,7 +98,7 @@ def ssh_private_key_gen(private_key, password=None):
 
 def ssh_pubkey_gen(private_key=None, username='jumpserver', hostname='localhost', password=None):
     private_key = ssh_private_key_gen(private_key, password=password)
-    if not isinstance(private_key, (paramiko.RSAKey, paramiko.DSSKey)):
+    if not isinstance(private_key, _supported_paramiko_ssh_key_types):
         raise IOError('Invalid private key')
 
     public_key = "%(key_type)s %(key_content)s %(username)s@%(hostname)s" % {