diff --git a/walkthroughs/week-4-tdd/project/pom.xml b/walkthroughs/week-4-tdd/project/pom.xml
index e4d5dce..8907094 100644
--- a/walkthroughs/week-4-tdd/project/pom.xml
+++ b/walkthroughs/week-4-tdd/project/pom.xml
@@ -34,7 +34,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>