diff --git a/spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/bundling/BootBuildImageIntegrationTests.gradle b/spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/bundling/BootBuildImageIntegrationTests.gradle
index feb1992eeb..8971742147 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/bundling/BootBuildImageIntegrationTests.gradle
+++ b/spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/bundling/BootBuildImageIntegrationTests.gradle
@@ -2,3 +2,6 @@ plugins {
 	id 'java'
 	id 'org.springframework.boot' version '{version}'
 }
+
+sourceCompatibility = '1.8'
+targetCompatibility = '1.8'