diff --git a/pom.xml b/pom.xml
index 8a29df7..0bb18b4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,18 +27,20 @@
 	<properties>
 		<maven.compiler.source>1.7</maven.compiler.source>
 		<maven.compiler.target>1.7</maven.compiler.target>
+		<junit.version>4.13</junit.version>
 	</properties>
 
 	<dependencies>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.13</version>
+			<version>${junit.version}</version>
 		</dependency>
 	</dependencies>
 
 	<build>
 		<plugins>
+			<!-- This plugin enables the generation of a javadoc JAR -->
 			<plugin>
 				<artifactId>maven-javadoc-plugin</artifactId>
 				<executions>