diff --git a/spring-security-modules/spring-security-web-thymeleaf/pom.xml b/spring-security-modules/spring-security-web-thymeleaf/pom.xml
index dd5f2d7c97..2c8764b88a 100644
--- a/spring-security-modules/spring-security-web-thymeleaf/pom.xml
+++ b/spring-security-modules/spring-security-web-thymeleaf/pom.xml
@@ -11,7 +11,8 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>spring-security-modules</artifactId>
+        <artifactId>parent-boot-3</artifactId>
+        <relativePath>../../parent-boot-3</relativePath>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
@@ -40,8 +41,12 @@
         </dependency>
         <dependency>
             <groupId>org.thymeleaf.extras</groupId>
-            <artifactId>thymeleaf-extras-springsecurity5</artifactId>
+            <artifactId>thymeleaf-extras-springsecurity6</artifactId>
         </dependency>
     </dependencies>
 
+    <properties>
+        <start-class>com.baeldung.springsecuritythymeleaf.SpringSecurityThymeleafApplication</start-class>
+    </properties>
+
 </project>
\ No newline at end of file
diff --git a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/CustomUserDetailsService.java b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/CustomUserDetailsService.java
index e84f9eac55..2382630e62 100644
--- a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/CustomUserDetailsService.java
+++ b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/CustomUserDetailsService.java
@@ -7,7 +7,7 @@ import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 
-import javax.annotation.PostConstruct;
+import jakarta.annotation.PostConstruct;
 
 import java.util.Collections;
 import java.util.HashMap;
diff --git a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/SecurityConfiguration.java b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/SecurityConfiguration.java
index d438aefcdc..cd8eec18aa 100644
--- a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/SecurityConfiguration.java
+++ b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/customuserdetails/SecurityConfiguration.java
@@ -21,19 +21,14 @@ public class SecurityConfiguration {
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http.userDetailsService(userDetailsService)
-            .authorizeRequests()
-            .anyRequest()
-            .authenticated()
-            .and()
-            .formLogin()
-            .loginPage("/login")
-            .permitAll()
-            .defaultSuccessUrl("/index")
-            .and()
-            .logout()
-            .permitAll()
-            .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
-            .logoutSuccessUrl("/login");
+            .authorizeHttpRequests(authorizationManagerRequestMatcherRegistry -> authorizationManagerRequestMatcherRegistry
+                    .anyRequest().authenticated())
+            .formLogin(httpSecurityFormLoginConfigurer -> httpSecurityFormLoginConfigurer
+                    .loginPage("/login").permitAll()
+                    .defaultSuccessUrl("/index"))
+            .logout(httpSecurityLogoutConfigurer -> httpSecurityLogoutConfigurer.permitAll()
+                    .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
+                    .logoutSuccessUrl("/login"));
         return http.build();
     }
 }
diff --git a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/springsecuritythymeleaf/SecurityConfiguration.java b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/springsecuritythymeleaf/SecurityConfiguration.java
index b0478ed01c..c270635363 100644
--- a/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/springsecuritythymeleaf/SecurityConfiguration.java
+++ b/spring-security-modules/spring-security-web-thymeleaf/src/main/java/com/baeldung/springsecuritythymeleaf/SecurityConfiguration.java
@@ -16,19 +16,13 @@ public class SecurityConfiguration {
 
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
-        http.authorizeRequests()
-            .anyRequest()
-            .authenticated()
-            .and()
-            .formLogin()
-            .loginPage("/login")
-            .permitAll()
-            .successForwardUrl("/index")
-            .and()
-            .logout()
-            .permitAll()
-            .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
-            .logoutSuccessUrl("/login");
+        http.authorizeHttpRequests(authorizationManagerRequestMatcherRegistry ->
+                        authorizationManagerRequestMatcherRegistry.anyRequest().authenticated())
+            .formLogin(httpSecurityFormLoginConfigurer ->
+                    httpSecurityFormLoginConfigurer.loginPage("/login").permitAll().successForwardUrl("/index"))
+            .logout(httpSecurityLogoutConfigurer -> httpSecurityLogoutConfigurer.permitAll()
+                    .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
+                    .logoutSuccessUrl("/login"));
         return http.build();
     }