diff --git a/src/main/java/com/postmark/java/PostmarkClient.java b/src/main/java/com/postmark/java/PostmarkClient.java
index <HASH>..<HASH> 100644
--- a/src/main/java/com/postmark/java/PostmarkClient.java
+++ b/src/main/java/com/postmark/java/PostmarkClient.java
@@ -59,6 +59,7 @@ public class PostmarkClient {
         gsonBuilder.registerTypeAdapter(DateTime.class, new DateTimeTypeAdapter());
         gsonBuilder.setPrettyPrinting();
         gsonBuilder.setExclusionStrategies(new SkipMeExclusionStrategy(Boolean.class));
+        gsonBuilder.disableHtmlEscaping();
 
         logger.addHandler(new ConsoleHandler());
         logger.setLevel(Level.ALL);
Disabled HTML escaping so that trailing = in Base<I> are not encoded with \u<I>d