diff --git a/build.gradle b/build.gradle
index 9800faf..63f8136 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
 plugins {
 	id 'java'
 	id 'application'
-	id 'com.github.johnrengelman.shadow' version '1.2.3'
-	id 'edu.sc.seis.macAppBundle' version '2.1.5'
+	id 'com.github.johnrengelman.shadow' version '2.0.4'
+	id 'edu.sc.seis.macAppBundle' version '2.2.1'
 }
 
 sourceCompatibility = 1.7