diff --git a/java/src/test/java/org/msgpack/util/TestDynamicCodeGenPackerTemplate.java b/java/src/test/java/org/msgpack/util/codegen/TestDynamicCodeGenPackerTemplate.java
similarity index 98%
rename from java/src/test/java/org/msgpack/util/TestDynamicCodeGenPackerTemplate.java
rename to java/src/test/java/org/msgpack/util/codegen/TestDynamicCodeGenPackerTemplate.java
index 5b52c8ac..aba89202 100644
--- a/java/src/test/java/org/msgpack/util/TestDynamicCodeGenPackerTemplate.java
+++ b/java/src/test/java/org/msgpack/util/codegen/TestDynamicCodeGenPackerTemplate.java
@@ -1,4 +1,4 @@
-package org.msgpack.util;
+package org.msgpack.util.codegen;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;