diff --git a/ssh/client.go b/ssh/client.go
index ad6c2c3e50..c976f0fef9 100644
--- a/ssh/client.go
+++ b/ssh/client.go
@@ -53,6 +53,7 @@ var (
 		"-o", "LogLevel=quiet", // suppress "Warning: Permanently added '[localhost]:2022' (ECDSA) to the list of known hosts."
 		"-o", "ConnectionAttempts=3", // retry 3 times if SSH connection fails
 		"-o", "ConnectTimeout=10", // timeout after 10 seconds
+		"-t", // force tty allocation
 	}
 	defaultClientType SSHClientType = External
 )