diff --git a/liaoxuefeng/pom.xml b/liaoxuefeng/pom.xml
index cec6d18..242a755 100644
--- a/liaoxuefeng/pom.xml
+++ b/liaoxuefeng/pom.xml
@@ -29,7 +29,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.12.1</version>
+            <version>3.16.3</version>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>