diff --git a/dependencies/pom.xml b/dependencies/pom.xml
index cc8c1d3e252..9e2b2bc756a 100644
--- a/dependencies/pom.xml
+++ b/dependencies/pom.xml
@@ -53,12 +53,12 @@
         <version.lib.google-api-client>1.34.1</version.lib.google-api-client>
         <version.lib.google-oauth-client>1.33.3</version.lib.google-oauth-client>
         <version.lib.google-error-prone>2.3.3</version.lib.google-error-prone>
-        <version.lib.google-protobuf>3.21.7</version.lib.google-protobuf>
+        <version.lib.google-protobuf>4.27.3</version.lib.google-protobuf>
         <version.lib.graalvm>23.1.0</version.lib.graalvm>
         <version.lib.graphql-java>18.6</version.lib.graphql-java>
         <version.lib.graphql-java.extended.scalars>18.3</version.lib.graphql-java.extended.scalars>
         <version.lib.gson>2.9.0</version.lib.gson>
-        <version.lib.grpc>1.60.0</version.lib.grpc>
+        <version.lib.grpc>1.65.1</version.lib.grpc>
         <version.lib.guava>32.0.1-jre</version.lib.guava>
         <version.lib.h2>2.2.220</version.lib.h2>
         <version.lib.hamcrest>1.3</version.lib.hamcrest>
diff --git a/grpc/core/src/main/java/module-info.java b/grpc/core/src/main/java/module-info.java
index f2866601099..930d44df09a 100644
--- a/grpc/core/src/main/java/module-info.java
+++ b/grpc/core/src/main/java/module-info.java
@@ -28,7 +28,6 @@
     requires transitive io.grpc.stub;
     requires transitive com.google.protobuf;
     requires transitive io.grpc.protobuf;
-    requires transitive io.grpc.protobuf.lite;
 
     exports io.helidon.grpc.core;
 }
diff --git a/microprofile/grpc/server/src/main/java/module-info.java b/microprofile/grpc/server/src/main/java/module-info.java
index 71e2659d08f..c01fcb3b9d5 100644
--- a/microprofile/grpc/server/src/main/java/module-info.java
+++ b/microprofile/grpc/server/src/main/java/module-info.java
@@ -39,7 +39,6 @@
     requires io.helidon.webserver.grpc;
 
     requires io.grpc;
-    requires io.grpc.protobuf.lite;
     requires com.google.protobuf;
 
     requires microprofile.health.api;
diff --git a/webserver/grpc/src/main/java/io/helidon/webserver/grpc/ProtoMarshaller.java b/webserver/grpc/src/main/java/io/helidon/webserver/grpc/ProtoMarshaller.java
index a3733e82db6..4908f2c8880 100644
--- a/webserver/grpc/src/main/java/io/helidon/webserver/grpc/ProtoMarshaller.java
+++ b/webserver/grpc/src/main/java/io/helidon/webserver/grpc/ProtoMarshaller.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ * Copyright (c) 2022, 2024 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,9 +19,9 @@
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
-import com.google.protobuf.MessageLite;
+import com.google.protobuf.Message;
 import io.grpc.MethodDescriptor;
-import io.grpc.protobuf.lite.ProtoLiteUtils;
+import io.grpc.protobuf.ProtoUtils;
 
 final class ProtoMarshaller {
     private static final Map<Class<?>, MethodDescriptor.Marshaller<?>> CACHE = new ConcurrentHashMap<>();
@@ -35,12 +35,12 @@ static <T> MethodDescriptor.Marshaller<T> get(Class<T> clazz) {
         if (result != null) {
             return result;
         }
-        // i may create it twice, but that should not really matter
+        // it may create it twice, but that should not really matter
         try {
             java.lang.reflect.Method getDefaultInstance = clazz.getDeclaredMethod("getDefaultInstance");
-            MessageLite instance = (MessageLite) getDefaultInstance.invoke(clazz);
+            Message instance = (Message) getDefaultInstance.invoke(clazz);
 
-            result = (MethodDescriptor.Marshaller<T>) ProtoLiteUtils.marshaller(instance);
+            result = (MethodDescriptor.Marshaller<T>) ProtoUtils.marshaller(instance);
             MethodDescriptor.Marshaller<T> current = (MethodDescriptor.Marshaller<T>) CACHE.putIfAbsent(clazz, result);
             return current == null ? result : current;
         } catch (ReflectiveOperationException e) {