diff --git a/packages/modules/mongodb/src/mongodb-container.test.ts b/packages/modules/mongodb/src/mongodb-container.test.ts
index 1c3a57743..83c82c0b3 100644
--- a/packages/modules/mongodb/src/mongodb-container.test.ts
+++ b/packages/modules/mongodb/src/mongodb-container.test.ts
@@ -61,4 +61,56 @@ describe("MongodbContainer", { timeout: 240_000 }, () => {
     await mongodbContainer.stop();
   });
   // }
+
+  it("uses custom credentials (Mongo4, old commands)", async () => {
+    const mongodbContainer = await new MongoDBContainer("mongo:4.0.1")
+      .withUsername("CustomUserName")
+      .withPassword("CustomPassword")
+      .start();
+
+    const db = mongoose.createConnection(mongodbContainer.getConnectionString(), { directConnection: true });
+
+    const fooCollection = db.collection("foo");
+    const obj = { value: 1 };
+
+    const session = await db.startSession();
+    await session.withTransaction(async () => {
+      await fooCollection.insertOne(obj);
+    });
+
+    expect(
+      await fooCollection.findOne({
+        value: 1,
+      })
+    ).toEqual(obj);
+
+    await mongoose.disconnect();
+    await mongodbContainer.stop();
+  });
+
+  it("uses custom credentials (Mongo8, new commands)", async () => {
+    const mongodbContainer = await new MongoDBContainer("mongo:8.0.8")
+      .withUsername("CustomUserName")
+      .withPassword("CustomPassword")
+      .start();
+
+    const db = mongoose.createConnection(mongodbContainer.getConnectionString(), { directConnection: true });
+
+    const fooCollection = db.collection("foo");
+    const obj = { value: 1 };
+
+    const session = await db.startSession();
+    await session.withTransaction(async () => {
+      await fooCollection.insertOne(obj);
+    });
+
+    expect(
+      await fooCollection.findOne({
+        value: 1,
+      })
+    ).toEqual(obj);
+
+    await mongoose.disconnect();
+    await mongodbContainer.stop();
+  });
 });
diff --git a/packages/modules/mongodb/src/mongodb-container.ts b/packages/modules/mongodb/src/mongodb-container.ts
index 0e20be1fc..3453c5cbc 100644
--- a/packages/modules/mongodb/src/mongodb-container.ts
+++ b/packages/modules/mongodb/src/mongodb-container.ts
@@ -3,6 +3,9 @@ import { AbstractStartedContainer, ExecResult, GenericContainer, StartedTestCont
 const MONGODB_PORT = 27017;
 
 export class MongoDBContainer extends GenericContainer {
+  private username: string | null = null;
+  private password: string | null = null;
+
   constructor(image = "mongo:4.0.1") {
     super(image);
     this.withExposedPorts(MONGODB_PORT)
@@ -11,8 +14,33 @@ export class MongoDBContainer extends GenericContainer {
       .withStartupTimeout(120_000);
   }
 
+  public withUsername(username: string): this {
+    this.username = username;
+    return this;
+  }
+
+  public withPassword(rootPassword: string): this {
+    this.password = rootPassword;
+    return this;
+  }
+
   public override async start(): Promise<StartedMongoDBContainer> {
-    return new StartedMongoDBContainer(await super.start());
+    if (this.username && this.password) {
+      const containerKeyfilePath = "/tmp/mongo-keyfile";
+      this.withCommand([
+        "/bin/sh",
+        "-c",
+        `
+        openssl rand -base64 756 > ${containerKeyfilePath} &&
+        chmod 600 ${containerKeyfilePath} &&
+        chown mongodb:mongodb ${containerKeyfilePath} &&
+        exec mongod --replSet rs0 --keyFile ${containerKeyfilePath} --bind_ip_all
+        `,
+      ]);
+      this.withEnvironment({ MONGO_INITDB_ROOT_USERNAME: this.username, MONGO_INITDB_ROOT_PASSWORD: this.password });
+    }
+
+    return new StartedMongoDBContainer(await super.start(), this.username, this.password);
   }
 
   protected override async containerStarted(startedTestContainer: StartedTestContainer): Promise<void> {
@@ -20,7 +48,7 @@ export class MongoDBContainer extends GenericContainer {
   }
 
   private async initReplicaSet(startedTestContainer: StartedTestContainer) {
-    await this.executeMongoEvalCommand(startedTestContainer, "rs.initiate();");
+    await this.executeMongoEvalCommand(startedTestContainer, `rs.initiate();`);
     await this.executeMongoEvalCommand(startedTestContainer, this.buildMongoWaitCommand());
   }
 
@@ -30,7 +58,15 @@ export class MongoDBContainer extends GenericContainer {
   }
 
   private buildMongoEvalCommand(command: string) {
-    return [this.getMongoCmdBasedOnImageTag(), "--eval", command];
+    const cmd = [this.getMongoCmdBasedOnImageTag()];
+
+    if (this.username && this.password) {
+      cmd.push("--username", this.username, "--password", this.password, "--authenticationDatabase", "admin");
+    }
+
+    cmd.push("--eval", command);
+
+    return cmd;
   }
 
   private getMongoCmdBasedOnImageTag() {
@@ -58,11 +94,19 @@ export class MongoDBContainer extends GenericContainer {
 }
 
 export class StartedMongoDBContainer extends AbstractStartedContainer {
-  constructor(startedTestContainer: StartedTestContainer) {
+  constructor(
+    startedTestContainer: StartedTestContainer,
+    private readonly username: string | null,
+    private readonly password: string | null
+  ) {
     super(startedTestContainer);
   }
 
   public getConnectionString(): string {
+    if (this.username !== null && this.password !== null) {
+      return `mongodb://${this.username}:${this.password}@${this.getHost()}:${this.getMappedPort(MONGODB_PORT)}`;
+    }
+
     return `mongodb://${this.getHost()}:${this.getMappedPort(MONGODB_PORT)}`;
   }
 }