diff --git a/vaunt-generator/src/main/java/com/hltech/vaunt/generator/VauntGenerator.java b/vaunt-generator/src/main/java/com/hltech/vaunt/generator/VauntGenerator.java
index 03da18d..95df224 100644
--- a/vaunt-generator/src/main/java/com/hltech/vaunt/generator/VauntGenerator.java
+++ b/vaunt-generator/src/main/java/com/hltech/vaunt/generator/VauntGenerator.java
@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.guava.GuavaModule;
 import com.fasterxml.jackson.module.jsonSchema.JsonSchemaGenerator;
 import com.hltech.vaunt.core.domain.model.Service;
 import com.hltech.vaunt.generator.domain.representation.RepresentationExtractor;
@@ -18,6 +19,7 @@ public class VauntGenerator {
 
     public VauntGenerator() {
         ObjectMapper mapper = new ObjectMapper();
+        mapper.registerModule(new GuavaModule());
         JsonSchemaGenerator generator = new JsonSchemaGenerator(mapper);
 
         extractor = new RepresentationExtractor(generator);