diff --git a/cettia/two/server/pom.xml b/cettia/two/server/pom.xml
index 14b59d3b..9ef07c04 100644
--- a/cettia/two/server/pom.xml
+++ b/cettia/two/server/pom.xml
@@ -36,7 +36,7 @@
 		<dependency>
 			<groupId>com.google.protobuf</groupId>
 			<artifactId>protobuf-java</artifactId>
-			<version>4.28.0</version>
+			<version>4.28.2</version>
 		</dependency>
 	</dependencies>