diff --git a/samples/grpc-oauth2/pom.xml b/samples/grpc-oauth2/pom.xml
index 8f45d48..3df6e49 100644
--- a/samples/grpc-oauth2/pom.xml
+++ b/samples/grpc-oauth2/pom.xml
@@ -71,7 +71,7 @@
 		<dependency>
 			<groupId>org.springframework.experimental.boot</groupId>
 			<artifactId>spring-boot-testjars-maven</artifactId>
-			<version>0.0.3</version>
+			<version>0.0.4</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/samples/grpc-oauth2/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java b/samples/grpc-oauth2/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
index c4b9369..c9f2c52 100644
--- a/samples/grpc-oauth2/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
+++ b/samples/grpc-oauth2/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
@@ -124,9 +124,9 @@ public class GrpcServerApplicationTests {
 		@OAuth2ClientProviderIssuerUri
 		static CommonsExecWebServerFactoryBean authServer() {
 			return CommonsExecWebServerFactoryBean.builder()
-				.defaultSpringBootApplicationMain()
-				.classpath(classpath -> classpath
-					.entries(MavenClasspathEntry.springBootStarter("oauth2-authorization-server")));
+				.useGenericSpringBootMain()
+				.classpath(classpath -> classpath.entries(new MavenClasspathEntry(
+						"org.springframework.boot:spring-boot-starter-oauth2-authorization-server:3.4.4")));
 		}
 
 		@Bean