diff --git a/pom.xml b/pom.xml
index 7bb4e8cdb..e42e64a33 100644
--- a/pom.xml
+++ b/pom.xml
@@ -516,7 +516,7 @@
     <project.auth.version>1.23.0</project.auth.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.gson.version>2.8.6</project.gson.version>
-    <project.protobuf-java.version>3.25.3</project.protobuf-java.version>
+    <project.protobuf-java.version>4.26.0</project.protobuf-java.version>
     <project.guava.version>33.0.0-jre</project.guava.version>
     <project.appengine.version>2.0.25</project.appengine.version>
     <project.xpp3.version>1.1.4c</project.xpp3.version>