diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/json/parser/JsonParser.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/json/parser/JsonParser.java
index 931536548..fa7745cdf 100644
--- a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/json/parser/JsonParser.java
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/json/parser/JsonParser.java
@@ -653,6 +653,7 @@ public class JsonParser {
 
   private static byte[] fetch(String source) throws IOException {
     SimpleHTTPClient fetcher = new SimpleHTTPClient();
+    fetcher.addHeader("Accept", "application/json, application/fhir+json");
     HTTPResult res = fetcher.get(source+"?nocache=" + System.currentTimeMillis());
     res.checkThrowException();
     return res.getContent();