diff --git a/gradle/wrapper/groovy-wrapper.jar b/gradle/wrapper/groovy-wrapper.jar
index 3c9dd81..e294439 100644
Binary files a/gradle/wrapper/groovy-wrapper.jar and b/gradle/wrapper/groovy-wrapper.jar differ
diff --git a/src/main/java/org/gradle/wrapper/GroovyBootstrapMainStarter.java b/src/main/java/org/gradle/wrapper/GroovyBootstrapMainStarter.java
index f7d329d..4a5c814 100644
--- a/src/main/java/org/gradle/wrapper/GroovyBootstrapMainStarter.java
+++ b/src/main/java/org/gradle/wrapper/GroovyBootstrapMainStarter.java
@@ -28,7 +28,7 @@ public void start(String[] args, File gradleHome) throws Exception {
                 findJar("ivy", gradleHome, "lib/plugins"),
                 findJar("junit", gradleHome, "lib/plugins")
         };
-        try (URLClassLoader contextClassLoader = new URLClassLoader(urls, ClassLoader.getSystemClassLoader().getParent())) {
+        try (URLClassLoader contextClassLoader = new URLClassLoader(urls, Thread.currentThread().getContextClassLoader())) {
             Thread.currentThread().setContextClassLoader(contextClassLoader);
             Class<?> mainClass = contextClassLoader.loadClass("groovy.ui.GroovyMain");
             Method mainMethod = mainClass.getMethod("main", String[].class);