diff --git a/pom.xml b/pom.xml
index 44fe8df..3c33388 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,10 +2,11 @@
 <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>
+    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-parent -->
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.0.2</version>
+        <version>3.3.5</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
 
@@ -17,7 +18,7 @@
     <description>Demo project for Swagger</description>
 
     <properties>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
     </properties>
 
     <dependencies>
@@ -26,10 +27,11 @@
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
 
+        <!-- https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-starter-webmvc-ui -->
         <dependency>
             <groupId>org.springdoc</groupId>
             <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
-            <version>2.0.2</version>
+            <version>2.6.0</version>
         </dependency>
     </dependencies>