diff --git a/Plan/build.gradle b/Plan/build.gradle
index a843f4bae..55e74efec 100644
--- a/Plan/build.gradle
+++ b/Plan/build.gradle
@@ -11,7 +11,7 @@ buildscript {
 }
 
 plugins {
-    id "com.github.johnrengelman.shadow" version "7.1.2" apply false
+    id "com.github.johnrengelman.shadow" version "8.1.1" apply false
     id "java"
     id 'java-library'
     id "jacoco"