diff --git a/ch03-higher/pom.xml b/ch03-higher/pom.xml
index a345cc0..7801e1c 100644
--- a/ch03-higher/pom.xml
+++ b/ch03-higher/pom.xml
@@ -12,7 +12,7 @@
     <artifactId>ch03-higher</artifactId>
 
     <properties>
-        <spring.boot.version>1.5.0.RELEASE</spring.boot.version>
+        <spring.boot.version>2.5.12</spring.boot.version>
     </properties>
 
     <dependencies>