diff --git a/testing/assertj/pom.xml b/assertj/pom.xml
similarity index 95%
rename from testing/assertj/pom.xml
rename to assertj/pom.xml
index 9bef9435..e0701cdb 100644
--- a/testing/assertj/pom.xml
+++ b/assertj/pom.xml
@@ -8,7 +8,6 @@
     <groupId>io.mincong</groupId>
     <artifactId>java-examples-parent</artifactId>
     <version>1.0.0-SNAPSHOT</version>
-    <relativePath>../../pom.xml</relativePath>
   </parent>
 
   <artifactId>java-examples-assertj</artifactId>
diff --git a/testing/assertj/src/test/java/io/mincongh/testing/assertj/AssertJFeaturesJava8Test.java b/assertj/src/test/java/io/mincongh/testing/assertj/AssertJFeaturesJava8Test.java
similarity index 100%
rename from testing/assertj/src/test/java/io/mincongh/testing/assertj/AssertJFeaturesJava8Test.java
rename to assertj/src/test/java/io/mincongh/testing/assertj/AssertJFeaturesJava8Test.java
diff --git a/testing/junit/pom.xml b/junit4/pom.xml
similarity index 82%
rename from testing/junit/pom.xml
rename to junit4/pom.xml
index 40ad2f54..9cb3f171 100644
--- a/testing/junit/pom.xml
+++ b/junit4/pom.xml
@@ -8,11 +8,10 @@
     <groupId>io.mincong</groupId>
     <artifactId>java-examples-parent</artifactId>
     <version>1.0.0-SNAPSHOT</version>
-    <relativePath>../../pom.xml</relativePath>
   </parent>
 
-  <artifactId>java-examples-junit</artifactId>
-  <name>Java Examples - JUnit</name>
+  <artifactId>java-examples-junit4</artifactId>
+  <name>Java Examples - JUnit 4</name>
 
   <dependencies>
     <dependency>
diff --git a/testing/junit/src/test/java/io/mincongh/testing/junit/BeforeAndAfterTest.java b/junit4/src/test/java/io/mincongh/testing/junit/BeforeAndAfterTest.java
similarity index 100%
rename from testing/junit/src/test/java/io/mincongh/testing/junit/BeforeAndAfterTest.java
rename to junit4/src/test/java/io/mincongh/testing/junit/BeforeAndAfterTest.java
diff --git a/testing/junit/src/test/java/io/mincongh/testing/junit/So49333280Test.java b/junit4/src/test/java/io/mincongh/testing/junit/So49333280Test.java
similarity index 100%
rename from testing/junit/src/test/java/io/mincongh/testing/junit/So49333280Test.java
rename to junit4/src/test/java/io/mincongh/testing/junit/So49333280Test.java
diff --git a/pom.xml b/pom.xml
index ba136cc6..f15e71b4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,6 +29,7 @@
 
   <modules>
     <module>akka</module>
+    <module>assertj</module>
     <module>basic</module>
     <module>cli</module>
     <module>concurrency</module>
@@ -45,6 +46,7 @@
     <module>jgit-http</module>
     <module>jmh</module>
     <module>json</module>
+    <module>junit4</module>
     <module>logback</module>
     <module>maven</module>
     <module>mockito</module>
@@ -52,8 +54,6 @@
     <module>oca</module>
     <module>ocp</module>
     <module>restful-api</module>
-    <module>testing/assertj</module>
-    <module>testing/junit</module>
     <module>typesafe-config</module>
     <module>vavr</module>
     <module>xml</module>