diff --git a/build.gradle b/build.gradle
index 925930a2f5bb4261f4f3cb96ffac1beed0254382..acc8b81d8e577c9003f2b9dfb0435d879dbe53fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,5 +41,9 @@ dependencies {
     implementation files('lib/align.jar')
     implementation files('lib/ontowrap.jar')
     implementation files('lib/procalign.jar')
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.8.1'
 }
 
+test {
+    useJUnitPlatform()
+}
diff --git a/src/main/META-INF/MANIFEST.MF b/src/main/META-INF/MANIFEST.MF
index 55bd542282e497c15223448770a9107e4be146e6..b18cfcf54038a73370a5aa383b7a75213ab6b5db 100644
--- a/src/main/META-INF/MANIFEST.MF
+++ b/src/main/META-INF/MANIFEST.MF
@@ -1,3 +1,3 @@
 Manifest-Version: 1.0
-Main-Class: irit.complex.ComplexAlignmentGeneration
+Main-Class: irit.main.ComplexAlignmentGeneration
 
diff --git a/src/main/java/irit/complex/ComplexAlignmentGeneration.java b/src/main/java/irit/main/ComplexAlignmentGeneration.java
similarity index 99%
rename from src/main/java/irit/complex/ComplexAlignmentGeneration.java
rename to src/main/java/irit/main/ComplexAlignmentGeneration.java
index 89ca501f6aaad429dfe629a8ed8c1d4ad9d37d43..96f4c23c915e0f98a57691862d842d4128ff0438 100755
--- a/src/main/java/irit/complex/ComplexAlignmentGeneration.java
+++ b/src/main/java/irit/main/ComplexAlignmentGeneration.java
@@ -1,4 +1,4 @@
-package irit.complex;
+package irit.main;
 
 import irit.complex.answer.Answer;
 import irit.complex.answer.PairAnswer;