springsecurity4のsec:authorize="hasRole('ROLE_ADMIN')"がうまく動作しない

SpringBootでWebアプリケーションを作成しています。springsecurity4を用いて
ユーザ権限に応じて表示・非表示を切り替えるタグを以下のように記述したのですが、うまく動作しません。

<li role="presentation" sec:authorize="hasRole('ROLE_ADMIN')"><a th:href="@{'/admin'}">アドミン用画面</a></li>

誰か解決方法がわかる方教えてください!

該当のソースコード

html
1<!DOCTYPE html>
2<html xmlns:th="http://www.thymeleaf.org" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
3<head>
4<meta charset="UTF-8">
5<link rel="stylesheet" th:href="@{/webjars/bootstrap/3.3.7-1/css/bootstrap.min.css}" ></link>
6<script th:src="@{/webjars/jquery/1.11.1/jquery.min.js}"></script>
7<script th:src="@{/webjars/bootstrap/3.3.7-1/js/bootstrap.min.js}"></script>
8<link th:href="@{/css/home.css}" rel="stylesheet"></link>
9<title>Home</title>
10</head>
11<body>
12	<!-- ヘッダー -->
13	<nav class="navbar navbar-inverse navbar-fixed-top">
14		<div class="container-fluid">
15			<div class="navbar-header">
16				<a class="navbar-brand" href="#">SpringSample</a>
17			</div>
18			<form method="post" th:action="@{/logout}">
19				<button class="btn btn-link pull-right navbar-brand" type="submit">ログアウト</button>
20			</form>
21		</div>
22	</nav>
23	<!-- サイドバー -->
24	<div class="container-fluid">
25		<div class="row">
26			<div class="cols-sm-2 sidebar">
27				<ul class="nav nav-pills nav-stacked">
28					<li role="presentation"><a th:href="@{'/userList'}">ユーザ管理</a></li>
29					<li role="presentation" sec:authorize="hasRole('ROLE_ADMIN')"><a th:href="@{'/admin'}">アドミン用画面</a></li>
30				</ul>
31			</div>
32		</div>
33	</div>
34	<!-- コンテンツ -->
35	<div class="container-fluid">
36		<div class="row">
37			<div class="col-sm-10 col-sm-offset-2 main">
38				<div th:include="__${contents}__"></div>
39			</div>
40		</div>
41	</div>
42</body>
43</html>

pom
1<?xml version="1.0" encoding="UTF-8"?>
2<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
4	<modelVersion>4.0.0</modelVersion>
5	<parent>
6		<groupId>org.springframework.boot</groupId>
7		<artifactId>spring-boot-starter-parent</artifactId>
8		<version>2.1.5.RELEASE</version>
9		<relativePath/> <!-- lookup parent from repository -->
10	</parent>
11	<groupId>com.example</groupId>
12	<artifactId>SpringSample</artifactId>
13	<version>0.0.1-SNAPSHOT</version>
14	<name>SpringSample</name>
15	<description>Demo project for Spring Boot</description>
16
17	<properties>
18		<java.version>1.8</java.version>
19	</properties>
20
21	<dependencies>
22		<dependency>
23			<groupId>org.springframework.boot</groupId>
24			<artifactId>spring-boot-starter-jdbc</artifactId>
25		</dependency>
26		<dependency>
27			<groupId>org.springframework.boot</groupId>
28			<artifactId>spring-boot-starter-thymeleaf</artifactId>
29			<version>2.1.2.RELEASE</version>
30		</dependency>
31		<dependency>
32			<groupId>org.springframework.boot</groupId>
33			<artifactId>spring-boot-starter-web</artifactId>
34		</dependency>
35
36		<dependency>
37			<groupId>org.springframework.boot</groupId>
38			<artifactId>spring-boot-devtools</artifactId>
39			<scope>runtime</scope>
40		</dependency>
41		<dependency>
42			<groupId>com.h2database</groupId>
43			<artifactId>h2</artifactId>
44			<scope>runtime</scope>
45		</dependency>
46		<dependency>
47			<groupId>org.projectlombok</groupId>
48			<artifactId>lombok</artifactId>
49			<optional>true</optional>
50		</dependency>
51		<dependency>
52			<groupId>org.springframework.boot</groupId>
53			<artifactId>spring-boot-starter-test</artifactId>
54			<scope>test</scope>
55		</dependency>
56		<dependency>
57			<groupId>org.webjars</groupId>
58			<artifactId>jquery</artifactId>
59			<version>1.11.1</version>
60		</dependency>
61		<dependency>
62			<groupId>org.webjars</groupId>
63			<artifactId>bootstrap</artifactId>
64			<version>3.3.7-1</version>
65		</dependency>
66		<dependency>
67			<groupId>org.springframework</groupId>
68			<artifactId>spring-aop</artifactId>
69		</dependency>
70		<dependency>
71			<groupId>org.aspectj</groupId>
72			<artifactId>aspectjweaver</artifactId>
73		</dependency>
74		<dependency>
75			<groupId>org.springframework.boot</groupId>
76			<artifactId>spring-boot-starter-security</artifactId>
77		</dependency>
78		<dependency>
79			<groupId>org.thymeleaf.extras</groupId>
80    		<artifactId>thymeleaf-extras-springsecurity4</artifactId>
81    		<version>2.1.3.RELEASE</version>
82		</dependency>
83	</dependencies>
84
85	<build>
86		<plugins>
87			<plugin>
88				<groupId>org.springframework.boot</groupId>
89				<artifactId>spring-boot-maven-plugin</artifactId>
90			</plugin>
91		</plugins>
92	</build>
93
94</project>