diff --git a/12_SpringBootWebDevelopment/BookLibrary/pom.xml b/12_SpringBootWebDevelopment/BookLibrary/pom.xml
index 3020cbe..23d4a3f 100644
--- a/12_SpringBootWebDevelopment/BookLibrary/pom.xml
+++ b/12_SpringBootWebDevelopment/BookLibrary/pom.xml
@@ -34,7 +34,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
-            <version>2.4.0</version>
+            <version>2.5.12</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>