diff --git a/day04/java/highsource/pom.xml b/day04/java/highsource/pom.xml
index 81740cf..b7ae336 100644
--- a/day04/java/highsource/pom.xml
+++ b/day04/java/highsource/pom.xml
@@ -31,7 +31,7 @@
 			<dependency>
 				<groupId>junit</groupId>
 				<artifactId>junit</artifactId>
-				<version>4.11</version>
+				<version>4.13.1</version>
 			</dependency>
 			<dependency>
 				<groupId>org.assertj</groupId>