diff --git a/LICENSE b/LICENSE
index 03d3e19808..b07cd0d0ed 100644
--- a/LICENSE
+++ b/LICENSE
@@ -241,4 +241,42 @@ https://github.com/edazdarevic/CIDRUtils. The project is licensed under a MIT Li
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    * THE SOFTWARE.
\ No newline at end of file
+    * THE SOFTWARE.
+
+For :
+
+This product contains a file "org.apache.dubbo.common.utils.Utf8Utils.java" that form the Protocol Buffers project.
+Protocol Buffers is published at https://developers.google.com/protocol-buffers/ and is licensed under the following
+License:
+    Copyright 2008 Google Inc.  All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+        * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+        * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+        * Neither the name of Google Inc. nor the names of its
+    contributors may be used to endorse or promote products derived from
+    this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN 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.
+
+    Code generated by the Protocol Buffer compiler is owned by the owner
+    of the input file used when generating it.  This code is not
+    standalone and requires a support library to be linked with it.  This
+    support library is itself covered by the above license.
\ No newline at end of file
diff --git a/NOTICE b/NOTICE
index 7cae4f1b69..9664603fdd 100644
--- a/NOTICE
+++ b/NOTICE
@@ -13,3 +13,10 @@ Please visit the Netty web site for more information:
 
 Copyright 2014 The Netty Project
 
+The product contains code form the Google Protocol Buffers project:
+
+Please visit the following site for more information:
+https://developers.google.com/protocol-buffers/
+
+Copyright 2008 Google Inc.  All rights reserved.
+
diff --git a/pom.xml b/pom.xml
index 17f2906a8b..d550856aca 100644
--- a/pom.xml
+++ b/pom.xml
@@ -560,6 +560,9 @@
                                 <exclude>
                                     **/org/apache/dubbo/common/serialize/protobuf/support/wrapper/ThrowablePB.java
                                 </exclude>
+                                <exclude>
+                                    **/org/apache/dubbo/common/utils/Utf8Utils.java
+                                </exclude>
                                 <exclude>.github/**</exclude>
                                 <exclude>compiler/**</exclude>
                             </excludes>