diff --git a/build.gradle b/build.gradle
index 485e240..c719746 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,7 @@
 plugins {
     id 'java'
     id 'checkstyle'
+    id 'com.github.johnrengelman.shadow' version '7.1.2'
 }
 
 group = 'com.lmax'