diff --git a/build.gradle b/build.gradle
index 8acdeb2..f0328f5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -36,7 +36,7 @@ allprojects {
     versions = [
       wiremock: "3.9.1",
       grpc    : "1.66.0",
-      protobuf: "3.25.3"
+      protobuf: "3.25.5"
     ]
 
     repoUser = this.hasProperty('sonatypeUser') ? sonatypeUser : 'default'
diff --git a/wiremock-grpc-extension-standalone/build.gradle b/wiremock-grpc-extension-standalone/build.gradle
index 0a6b11f..85a3121 100644
--- a/wiremock-grpc-extension-standalone/build.gradle
+++ b/wiremock-grpc-extension-standalone/build.gradle
@@ -155,7 +155,7 @@ shadowJar {
 
 protobuf {
   protoc {
-    artifact = "com.google.protobuf:protoc:4.27.3"
+    artifact = "com.google.protobuf:protoc:4.27.5"
   }
 
   plugins {