diff --git a/maven-plugin/src/main/maven/plugin.xml b/maven-plugin/src/main/maven/plugin.xml
index 660cd5d6..7ab8a591 100644
--- a/maven-plugin/src/main/maven/plugin.xml
+++ b/maven-plugin/src/main/maven/plugin.xml
@@ -187,7 +187,7 @@
         <extraGenerators implementation="java.util.List" default-value=""/>
         <protoPaths default-value="src/test/proto,src/test/protobuf">${pekko-grpc.protoPaths}</protoPaths>
         <outputDirectory default-value="target/generated-test-sources">${pekko-grpc.outputDirectory}</outputDirectory>
-        <protocVersion implementation="java.lang.String" default-value="-v3.24.0">${pekko-grpc.protoc-version}</protocVersion> <!-- checked synced by VersionSyncCheckPlugin -->
+        <protocVersion implementation="java.lang.String" default-value="-v3.25.3">${pekko-grpc.protoc-version}</protocVersion> <!-- checked synced by VersionSyncCheckPlugin -->
         <includeStdTypes implementation="boolean" default-value="false" />
       </configuration>
     </mojo>