diff --git a/tapx-json/src/main/java/com/howardlewisship/tapx/json/JSONModule.java b/tapx-json/src/main/java/com/howardlewisship/tapx/json/JSONModule.java
index 6d76656..95b63f1 100644
--- a/tapx-json/src/main/java/com/howardlewisship/tapx/json/JSONModule.java
+++ b/tapx-json/src/main/java/com/howardlewisship/tapx/json/JSONModule.java
@@ -45,6 +45,7 @@ public static void standardJSONEncoders(MappedConfiguration<Class, JSONEncoder>
         configuration.add(JSONObject.class, identity);
         configuration.add(JSONArray.class, identity);
         configuration.add(JSONString.class, identity);
+        configuration.add(void.class, identity);
 
         configuration.addInstance(Iterable.class, IterableJSONEncoder.class);
         configuration.addInstance(Map.class, MapJSONEncoder.class);
diff --git a/tapx-json/src/test/groovy/json/tests/JSONEncoderTests.groovy b/tapx-json/src/test/groovy/json/tests/JSONEncoderTests.groovy
index ebb0792..df3fc17 100644
--- a/tapx-json/src/test/groovy/json/tests/JSONEncoderTests.groovy
+++ b/tapx-json/src/test/groovy/json/tests/JSONEncoderTests.groovy
@@ -33,5 +33,6 @@ class JSONEncoderTests extends Specification {
         false      | false
         true       | true
         3.75f      | 3.75f
+        null       | null
     }
 }