diff --git a/pom.xml b/pom.xml
index 870b966..e99da8f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,7 @@
         <maven-release-plugin-version>3.1.1</maven-release-plugin-version>
         <maven-source-plugin-version>3.3.1</maven-source-plugin-version>
         <maven-surefire-plugin-version>3.5.2</maven-surefire-plugin-version>
-        <protobuf-maven-plugin-version>2.7.0</protobuf-maven-plugin-version>
+        <protobuf-maven-plugin-version>2.9.1</protobuf-maven-plugin-version>
     </properties>
 
     <dependencyManagement>