diff --git a/java-wowa-training.iml b/java-wowa-training.iml
index 7af4641153da9b1c7984a36a301fff4794d38fec..5ca67ddade346389c95eb9dcd94ea72d78826d86 100644
--- a/java-wowa-training.iml
+++ b/java-wowa-training.iml
@@ -40,7 +40,7 @@
     <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-engine:5.3.1" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-engine:1.3.1" level="project" />
     <orderEntry type="library" name="Maven: info.debatty:java-aggregation:0.5" level="project" />
-    <orderEntry type="library" name="Maven: com.owlike:genson:1.4" level="project" />
+    <orderEntry type="library" name="Maven: com.owlike:genson:1.6" level="project" />
     <orderEntry type="library" name="Maven: org.apache.commons:commons-lang3:3.8.1" level="project" />
     <orderEntry type="library" name="Maven: be.cylab:java-roc:0.0.3" level="project" />
     <orderEntry type="library" name="Maven: com.opencsv:opencsv:4.5" level="project" />
diff --git a/pom.xml b/pom.xml
index 9bbf15c557ac15621f61b14ac1ea60073e55cc25..47a318e6d099853e96c976646e8d1da3ae6318fa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -82,7 +82,7 @@
         <dependency>
             <groupId>com.owlike</groupId>
             <artifactId>genson</artifactId>
-            <version>1.4</version>
+            <version>1.6</version>
         </dependency>
 
         <dependency>
@@ -255,7 +255,7 @@
             <plugin>
                 <groupId>com.github.spotbugs</groupId>
                 <artifactId>spotbugs-maven-plugin</artifactId>
-                <version>3.1.11</version>
+                <version>3.1.12.2</version>
                 <executions>
                     <execution>
                         <id>check</id>
diff --git a/src/test/java/be/cylab/java/wowa/training/AbstractSolutionTest.java b/src/test/java/be/cylab/java/wowa/training/AbstractSolutionTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..4812e8e6a6ce02a26df28bae1958baa8d7b36a2d
--- /dev/null
+++ b/src/test/java/be/cylab/java/wowa/training/AbstractSolutionTest.java
@@ -0,0 +1,7 @@
+package be.cylab.java.wowa.training;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class AbstractSolutionTest {
+
+}
\ No newline at end of file
diff --git a/src/test/java/be/cylab/java/wowa/training/SolutionAUCTest.java b/src/test/java/be/cylab/java/wowa/training/SolutionAUCTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..0e3611db7c88295aaa057ea1614df7cbc6005258
--- /dev/null
+++ b/src/test/java/be/cylab/java/wowa/training/SolutionAUCTest.java
@@ -0,0 +1,17 @@
+package be.cylab.java.wowa.training;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class SolutionAUCTest {
+
+    @BeforeEach
+    void setUp() {
+    }
+
+    @Test
+    void computeScoreTo() {
+    }
+}
\ No newline at end of file