diff --git a/samples/standalone/yml/http-server/build.gradle b/samples/standalone/yml/http-server/build.gradle
index 44e3909325..cac9d91c3a 100644
--- a/samples/standalone/yml/http-server/build.gradle
+++ b/samples/standalone/yml/http-server/build.gradle
@@ -30,6 +30,7 @@ repositories {
 apply plugin: 'groovy'
 apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
+apply plugin: 'spring-cloud-contract'
 apply plugin: 'maven-publish'
 apply plugin: 'maven'