diff --git a/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java b/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
index 5eb734d..8653746 100644
--- a/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
+++ b/driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java
@@ -268,15 +268,9 @@ public void testSetCharacterStream() throws Exception{
 
     @Test
     public void testEqualsContract(){
-        final StringBuilder one = new StringBuilder();
-        one.append("foo");
-        final StringBuilder two = new StringBuilder();
-        one.append("bar");
-
         EqualsVerifier
                 .forClass(CitrusClob.class)
                 .withNonnullFields("stringBuilder")
-                .withPrefabValues(StringBuilder.class, one, two)
                 .verify();
     }
 
diff --git a/pom.xml b/pom.xml
index a9c025f..289f880 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
     <!-- https://mvnrepository.com/artifact/com.jparams/to-string-verifier -->
     <to.string.verifier.version>1.4.5</to.string.verifier.version>
     <!-- https://mvnrepository.com/artifact/nl.jqno.equalsverifier/equalsverifier -->
-    <equals.verifier.version>3.1.4</equals.verifier.version>
+    <equals.verifier.version>3.1.6</equals.verifier.version>
     <!-- https://mvnrepository.com/artifact/org.powermock/powermock-module-testng -->
     <!-- https://mvnrepository.com/artifact/org.powermock/powermock-api-mockito2 -->
     <powermock.version>2.0.0</powermock.version>