diff --git a/sources-docs.js b/sources-docs.js
index c1c7bffa..0c4a968f 100644
--- a/sources-docs.js
+++ b/sources-docs.js
@@ -45,6 +45,15 @@ module.exports = [
       patterns: 'docs/en/!(userguide)/**'
     }
   },
+  {
+    resolve: `gatsby-source-git`,
+    options: {
+      name: `docs--6--optional_features/graphql`,
+      remote: `https://github.com/silverstripe/silverstripe-graphql.git`,
+      branch: `6`,
+      patterns: 'docs/en/!(userguide)/**'
+    }
+  },
   {
     resolve: 'gatsby-source-git',
     options: {