diff --git a/grpc/build.gradle.kts b/grpc/build.gradle.kts
index 21e775fbb..c6dd17fcd 100644
--- a/grpc/build.gradle.kts
+++ b/grpc/build.gradle.kts
@@ -16,7 +16,7 @@ java {
 }
 
 var grpcVersion = "1.63.0" // CURRENT_GRPC_VERSION
-var protobufVersion = "3.25.3"
+var protobufVersion = "4.26.1"
 var protocVersion = protobufVersion
 
 dependencies {
@@ -24,7 +24,7 @@ dependencies {
     implementation ("io.grpc:grpc-protobuf:${grpcVersion}")
     implementation ("io.grpc:grpc-services:${grpcVersion}")
     implementation ("io.grpc:grpc-stub:${grpcVersion}")
-    implementation ("com.google.protobuf:protobuf-java-util:3.25.3")
+    implementation ("com.google.protobuf:protobuf-java-util:4.26.1")
     implementation ("io.opentelemetry.instrumentation:opentelemetry-grpc-1.6:1.32.0-alpha")
     implementation ("com.google.guava:guava:33.1.0-jre")