diff --git a/src/renderGraphiQL.js b/src/renderGraphiQL.js
index 566a2316..23435068 100644
--- a/src/renderGraphiQL.js
+++ b/src/renderGraphiQL.js
@@ -84,6 +84,7 @@ add "&raw" to the end of the URL within a browser.
       return fetch(fetchURL, {
         method: 'post',
         headers: { 'Content-Type': 'application/json' },
+        credentials: 'same-origin',
         body: JSON.stringify(graphQLParams),
       }).then(function (response) {
         return response.json()