3 files changed, 4 insertions, 4 deletions
diff --git a/components/net/lwip_dhcpd/dhcp_server.c b/components/net/lwip_dhcpd/dhcp_server.c
index 93b4ad16f0..0ebbe89ca4 100644
--- a/components/net/lwip_dhcpd/dhcp_server.c
+++ b/components/net/lwip_dhcpd/dhcp_server.c
@@ -2,7 +2,7 @@
  * File      : dhcp_server.c
  *             A simple DHCP server implementation
  *
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
diff --git a/components/net/lwip_dhcpd/dhcp_server.h b/components/net/lwip_dhcpd/dhcp_server.h
index ea68d6b8ec..3533cb6087 100644
--- a/components/net/lwip_dhcpd/dhcp_server.h
+++ b/components/net/lwip_dhcpd/dhcp_server.h
@@ -2,7 +2,7 @@
  * File      : dhcp_server.h
  *             A simple DHCP server implementation
  *
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
diff --git a/components/net/lwip_dhcpd/dhcp_server_raw.c b/components/net/lwip_dhcpd/dhcp_server_raw.c
index 6c786301be..06a7affc97 100644
--- a/components/net/lwip_dhcpd/dhcp_server_raw.c
+++ b/components/net/lwip_dhcpd/dhcp_server_raw.c
@@ -1,7 +1,7 @@
 /*
  * File      : dhcp_server_raw.c
  *             A simple DHCP server implementation
- * COPYRIGHT (C) 2011-2018, Shanghai Real-Thread Technology Co., Ltd
+ * COPYRIGHT (C) 2011-2021, Shanghai Real-Thread Technology Co., Ltd
  * http://www.rt-thread.com
  * All rights reserved.
  *
@@ -26,7 +26,7 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
- * 
+ *
  * Change Logs:
  * Date           Author       Notes
  * 2014-04-01     Ren.Haibo    the first version