diff --git a/spring-grpc-kotlin-sample/build.gradle.kts b/spring-grpc-kotlin-sample/build.gradle.kts
index 6cfa1e6..4f508af 100644
--- a/spring-grpc-kotlin-sample/build.gradle.kts
+++ b/spring-grpc-kotlin-sample/build.gradle.kts
@@ -3,7 +3,7 @@ import com.google.protobuf.gradle.id
 plugins {
     kotlin("jvm") version "1.9.25"
     kotlin("plugin.spring") version "1.9.25"
-    id("org.springframework.boot") version "3.4.3"
+    id("org.springframework.boot") version "3.5.13"
     id("io.spring.dependency-management") version "1.1.7"
     id("com.google.protobuf") version "0.9.5"
 }