Add byte buddy dependency
diff --git a/log4j-core/src/test/java9/module-info.java b/log4j-core/src/test/java9/module-info.java
index 0df50d8..72544e2 100644
--- a/log4j-core/src/test/java9/module-info.java
+++ b/log4j-core/src/test/java9/module-info.java
@@ -69,6 +69,7 @@
requires transitive org.jctools.core;
requires transitive org.osgi.framework;
requires transitive com.conversantmedia.disruptor;
+ requires transitive net.bytebuddy;
requires com.fasterxml.jackson.core;
requires com.fasterxml.jackson.databind;
requires transitive com.fasterxml.jackson.dataformat.xml;