diff --git a/java-cohort/06-30-2021/interfaces/pom.xml b/java-cohort/06-30-2021/interfaces/pom.xml
index b9a9645..775cefc 100644
--- a/java-cohort/06-30-2021/interfaces/pom.xml
+++ b/java-cohort/06-30-2021/interfaces/pom.xml
@@ -11,7 +11,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>