diff --git a/day01/java/highsource/pom.xml b/day01/java/highsource/pom.xml
index cbbc67d..cc9c69e 100644
--- a/day01/java/highsource/pom.xml
+++ b/day01/java/highsource/pom.xml
@@ -22,7 +22,7 @@
 			<dependency>
 				<groupId>junit</groupId>
 				<artifactId>junit</artifactId>
-				<version>4.11</version>
+				<version>4.13.1</version>
 			</dependency>
 			<dependency>
 				<groupId>org.assertj</groupId>