diff --git a/master-package/bonus-lessons-2020/custom-dbunit-datatypes/pom.xml b/master-package/bonus-lessons-2020/custom-dbunit-datatypes/pom.xml
index 0c9c7f82..c69a04af 100644
--- a/master-package/bonus-lessons-2020/custom-dbunit-datatypes/pom.xml
+++ b/master-package/bonus-lessons-2020/custom-dbunit-datatypes/pom.xml
@@ -56,7 +56,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.2.18</version>
+            <version>42.4.1</version>
         </dependency>
         <dependency>
             <groupId>com.zaxxer</groupId>