diff --git a/docker/transport/sshconn.py b/docker/transport/sshconn.py
index 6d2b1af6..79aefcec 100644
--- a/docker/transport/sshconn.py
+++ b/docker/transport/sshconn.py
@@ -81,6 +81,7 @@ class SSHHTTPAdapter(BaseHTTPAdapter):
         logging.getLogger("paramiko").setLevel(logging.WARNING)
         self.ssh_client = paramiko.SSHClient()
         self.ssh_client.load_system_host_keys()
+        self.ssh_client.set_missing_host_key_policy(paramiko.WarningPolicy())
 
         self.base_url = base_url
         self._connect()