diff --git a/bom/pom.xml b/bom/pom.xml
index c9e9f13d..8c037f46 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -30,7 +30,7 @@
     <name>Posten signering - Java API Client BOM</name>
 
     <properties>
-        <signature.api.version>3.0.0</signature.api.version>
+        <signature.api.version>3.1.0</signature.api.version>
     </properties>
 
     <dependencyManagement>
diff --git a/lib/src/main/java/no/digipost/signature/client/asice/signature/XAdESArtifacts.java b/lib/src/main/java/no/digipost/signature/client/asice/signature/XAdESArtifacts.java
index 0d1b21a5..0df1ac95 100644
--- a/lib/src/main/java/no/digipost/signature/client/asice/signature/XAdESArtifacts.java
+++ b/lib/src/main/java/no/digipost/signature/client/asice/signature/XAdESArtifacts.java
@@ -7,12 +7,11 @@
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 
-import static java.util.Collections.singleton;
 import static java.util.stream.IntStream.range;
 
 final class XAdESArtifacts {
 
-    private static JaxbMarshaller marshaller = new JaxbMarshaller(singleton(QualifyingProperties.class));
+    private static JaxbMarshaller marshaller = new JaxbMarshaller(QualifyingProperties.class);
 
 
     public static XAdESArtifacts from(QualifyingProperties qualifyingProperties) {
diff --git a/lib/src/test/java/no/digipost/signature/client/asice/signature/CreateSignatureTest.java b/lib/src/test/java/no/digipost/signature/client/asice/signature/CreateSignatureTest.java
index 2fd7bf46..9a2f18a4 100644
--- a/lib/src/test/java/no/digipost/signature/client/asice/signature/CreateSignatureTest.java
+++ b/lib/src/test/java/no/digipost/signature/client/asice/signature/CreateSignatureTest.java
@@ -22,7 +22,6 @@
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
 import java.util.Base64;
-import java.util.HashSet;
 import java.util.List;
 
 import static java.util.Arrays.asList;
@@ -44,7 +43,7 @@ class CreateSignatureTest {
     private KeyStoreConfig noekkelpar;
     private List<ASiCEAttachable> files;
 
-    private static final JaxbMarshaller unmarshaller = new JaxbMarshaller(new HashSet<>(asList(XAdESSignatures.class, QualifyingProperties.class)));
+    private static final JaxbMarshaller unmarshaller = new JaxbMarshaller(XAdESSignatures.class, QualifyingProperties.class);
 
     @BeforeEach
     void setUp() {