diff --git a/complete/build.gradle b/complete/build.gradle
index 9ba2747..d66f735 100644
--- a/complete/build.gradle
+++ b/complete/build.gradle
@@ -15,6 +15,9 @@ repositories {
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.boot:spring-boot-testcontainers'
+	testImplementation 'org.testcontainers:junit-jupiter'
+	testImplementation 'org.testcontainers:mongodb'
 }
 
 test {
diff --git a/complete/pom.xml b/complete/pom.xml
index 8ac0f78..e955c5b 100644
--- a/complete/pom.xml
+++ b/complete/pom.xml
@@ -27,6 +27,21 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-testcontainers</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>junit-jupiter</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>mongodb</artifactId>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/complete/src/test/java/com/example/accessingdatamongodb/CustomerRepositoryTests.java b/complete/src/test/java/com/example/accessingdatamongodb/CustomerRepositoryTests.java
index 5a12c67..43965da 100644
--- a/complete/src/test/java/com/example/accessingdatamongodb/CustomerRepositoryTests.java
+++ b/complete/src/test/java/com/example/accessingdatamongodb/CustomerRepositoryTests.java
@@ -24,14 +24,21 @@
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
 import org.springframework.data.domain.Example;
 
-import com.example.accessingdatamongodb.Customer;
-import com.example.accessingdatamongodb.CustomerRepository;
+import org.testcontainers.containers.MongoDBContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
 
 @SpringBootTest
+@Testcontainers
 public class CustomerRepositoryTests {
 
+	@Container
+	@ServiceConnection
+	static MongoDBContainer container = new MongoDBContainer("mongo:7.0.2");
+
 	@Autowired
 	CustomerRepository repository;