diff --git a/pom.xml b/pom.xml
index fb49764..14c9754 100644
--- a/pom.xml
+++ b/pom.xml
@@ -90,7 +90,7 @@
         <dependency>
             <groupId>nl.jqno.equalsverifier</groupId>
             <artifactId>equalsverifier</artifactId>
-            <version>3.19.4</version>
+            <version>4.0.9</version>
             <scope>test</scope>
         </dependency>
         <dependency>