diff --git a/packages/gatsby-source-graphql/README.md b/packages/gatsby-source-graphql/README.md
index 941597a1ec88d..0993f30e01cd7 100644
--- a/packages/gatsby-source-graphql/README.md
+++ b/packages/gatsby-source-graphql/README.md
@@ -42,6 +42,12 @@ module.exports = {
           // Learn about environment variables: https://gatsby.dev/env-vars
           Authorization: `Bearer ${process.env.GITHUB_TOKEN}`,
         },
+        // HTTP headers alternatively accepts a function (allows async)
+        headers: async () => {
+          return {
+            Authorization: await getAuthorizationToken(),
+          }
+        },
         // Additional options to pass to node-fetch
         fetchOptions: {},
       },
diff --git a/packages/gatsby-source-graphql/src/gatsby-node.js b/packages/gatsby-source-graphql/src/gatsby-node.js
index b1988b7dec867..a02d79a8f42dc 100644
--- a/packages/gatsby-source-graphql/src/gatsby-node.js
+++ b/packages/gatsby-source-graphql/src/gatsby-node.js
@@ -51,8 +51,8 @@ exports.sourceNodes = async (
     link = createHttpLink({
       uri: url,
       fetch,
-      headers,
       fetchOptions,
+      headers: typeof headers === `function` ? await headers() : headers,
     })
   }