diff --git a/pekko-http-jackson3/src/main/java/com/github/pjfanning/pekkohttpjackson3/Jackson.java b/pekko-http-jackson3/src/main/java/com/github/pjfanning/pekkohttpjackson3/Jackson.java
index 761a0d5..e36a81c 100644
--- a/pekko-http-jackson3/src/main/java/com/github/pjfanning/pekkohttpjackson3/Jackson.java
+++ b/pekko-http-jackson3/src/main/java/com/github/pjfanning/pekkohttpjackson3/Jackson.java
@@ -20,9 +20,9 @@
 import tools.jackson.core.JacksonException;
 import tools.jackson.databind.ObjectMapper;
 
-public class Jackson {
+final class Jackson {
 
-    public static <T> Marshaller<T, RequestEntity> marshaller(ObjectMapper mapper) {
+    static <T> Marshaller<T, RequestEntity> marshaller(ObjectMapper mapper) {
         return Marshaller.wrapEntity(
                 u -> toJSON(mapper, u), Marshaller.stringToEntity(), MediaTypes.APPLICATION_JSON);
     }