diff --git a/build.gradle b/build.gradle
index 200876137..23299d5fe 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,7 +16,7 @@ buildscript {
         // https://github.com/google/guava/releases
         guavaVersion = '33.1.0-jre'
         // https://github.com/protocolbuffers/protobuf/releases
-        protobufVersion = '3.25.3'
+        protobufVersion = '4.26.1'
         protobufGradlePluginVersion = '0.9.4'
 
         // https://github.com/spring-projects/spring-boot/releases