diff --git a/src/clj_hl7_fhir/util.clj b/src/clj_hl7_fhir/util.clj
index 41f00bb..256e5c0 100644
--- a/src/clj_hl7_fhir/util.clj
+++ b/src/clj_hl7_fhir/util.clj
@@ -61,6 +61,6 @@
       (str)))
 
 (defn http-get-json [url]
-  (-> (http/get url)
+  (-> (http/get url {:accept "application/json+fhir"})
       :body
       (json/parse-string true)))
\ No newline at end of file