diff --git a/router-protobuf/build.gradle.kts b/router-protobuf/build.gradle.kts
index 6d422cc..9163824 100644
--- a/router-protobuf/build.gradle.kts
+++ b/router-protobuf/build.gradle.kts
@@ -14,8 +14,8 @@ dependencies {
     implementation(kotlin("reflect"))
 
     implementation("org.slf4j:slf4j-api:2.0.13")
-    api("com.google.protobuf:protobuf-java:3.25.3")
-    api("com.google.protobuf:protobuf-java-util:3.25.3")
+    api("com.google.protobuf:protobuf-java:4.27.2")
+    api("com.google.protobuf:protobuf-java-util:4.27.2")
     implementation("com.google.guava:guava:33.2.1-jre")
     api(project(":router"))