diff --git a/samples/lambda-kotlin-request-router-sample-proto/build.gradle.kts b/samples/lambda-kotlin-request-router-sample-proto/build.gradle.kts
index 2c67226..9bdf89f 100644
--- a/samples/lambda-kotlin-request-router-sample-proto/build.gradle.kts
+++ b/samples/lambda-kotlin-request-router-sample-proto/build.gradle.kts
@@ -18,7 +18,7 @@ plugins {
     java
     kotlin("jvm") version "2.0.0"
     idea
-    id("com.github.johnrengelman.shadow") version "5.1.0"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
     id("org.jmailen.kotlinter") version "1.22.0"
     id("com.google.protobuf") version "0.8.7"
 }