diff --git a/chapter4/knative-springboot/pom.xml b/chapter4/knative-springboot/pom.xml
index 364b574..9f72a90 100644
--- a/chapter4/knative-springboot/pom.xml
+++ b/chapter4/knative-springboot/pom.xml
@@ -15,7 +15,7 @@
   <properties>
     <java.version>21</java.version>
     <spring-cloud.version>2023.0.3</spring-cloud.version>
-    <compiler-plugin.version>3.13.0</compiler-plugin.version>
+    <compiler-plugin.version>3.15.0</compiler-plugin.version>
     <surefire-plugin.version>3.5.5</surefire-plugin.version>
     <maven.compiler.parameters>true</maven.compiler.parameters>
     <maven.compiler.source>21</maven.compiler.source>