diff --git a/build.gradle b/build.gradle
index 084f823..c281986 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@ dependencies {
     testImplementation('com.github.npathai:hamcrest-optional:2.0.0')
     testImplementation('org.hamcrest:hamcrest:2.2')
     testImplementation('org.mockito:mockito-core:5.10.0')
-    testImplementation('nl.jqno.equalsverifier:equalsverifier:3.15.1')
+    testImplementation('nl.jqno.equalsverifier:equalsverifier:3.15.6')
 }
 
 test {