diff --git a/backend/pom.xml b/backend/pom.xml
index 0ea4a5d..623e767 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -1,12 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
 		<version>2.7.6</version>
-		<relativePath/> <!-- lookup parent from repository -->
+		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.nellyxinwei</groupId>
 	<artifactId>backend</artifactId>
@@ -32,6 +33,10 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-security</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>
@@ -51,4 +56,4 @@
 		</plugins>
 	</build>
 
-</project>
+</project>
\ No newline at end of file
diff --git a/backend/src/main/java/com/nellyxinwei/backend/GreetingsController.java b/backend/src/main/java/com/nellyxinwei/backend/controllers/GreetingsController.java
similarity index 92%
rename from backend/src/main/java/com/nellyxinwei/backend/GreetingsController.java
rename to backend/src/main/java/com/nellyxinwei/backend/controllers/GreetingsController.java
index e57fd8e..7b8db41 100644
--- a/backend/src/main/java/com/nellyxinwei/backend/GreetingsController.java
+++ b/backend/src/main/java/com/nellyxinwei/backend/controllers/GreetingsController.java
@@ -1,4 +1,4 @@
-package com.nellyxinwei.backend;
+package com.nellyxinwei.backend.controllers;
 
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;