diff --git a/agent/utils/ssh/ssh.go b/agent/utils/ssh/ssh.go
index d00f700e4896..d6a82b12bb46 100644
--- a/agent/utils/ssh/ssh.go
+++ b/agent/utils/ssh/ssh.go
@@ -40,7 +40,7 @@ func NewClient(c ConnInfo) (*SSHClient, error) {
 		config.Auth = []gossh.AuthMethod{gossh.PublicKeys(signer)}
 	}
 	if c.DialTimeOut == 0 {
-		c.DialTimeOut = 5 * time.Second
+		c.DialTimeOut = 15 * time.Second
 	}
 	config.Timeout = c.DialTimeOut
 
diff --git a/core/utils/ssh/ssh.go b/core/utils/ssh/ssh.go
index 197b974f3c3d..2e4d809036f9 100644
--- a/core/utils/ssh/ssh.go
+++ b/core/utils/ssh/ssh.go
@@ -48,7 +48,7 @@ func NewClient(c ConnInfo) (*SSHClient, error) {
 		config.Auth = []gossh.AuthMethod{gossh.PublicKeys(signer)}
 	}
 	if c.DialTimeOut == 0 {
-		c.DialTimeOut = 5 * time.Second
+		c.DialTimeOut = 15 * time.Second
 	}
 	config.Timeout = c.DialTimeOut
 
@@ -256,7 +256,7 @@ func DialWithTimeout(network, addr string, useProxy bool, config *gossh.ClientCo
 	if err != nil {
 		return nil, err
 	}
-	_ = conn.SetDeadline(time.Now().Add(config.Timeout))
+	_ = conn.SetDeadline(time.Now().Add(config.Timeout * 2))
 	c, chans, reqs, err := gossh.NewClientConn(conn, addr, config)
 	if err != nil {
 		return nil, err