diff --git a/backend/register-tsconfig-prod-paths.js b/backend/register-tsconfig-prod-paths.js
index b3cba281..2cc33ff1 100644
--- a/backend/register-tsconfig-prod-paths.js
+++ b/backend/register-tsconfig-prod-paths.js
@@ -1,3 +1,11 @@
+/**
+ * See:
+ * https://github.com/dividab/tsconfig-paths
+ * https://github.com/TypeStrong/ts-node/issues/138
+ * https://github.com/TypeStrong/ts-node/issues/138#issuecomment-519602402
+ * https://github.com/TypeStrong/ts-node/pull/254
+ */
+
 const path = require('path');
 const tsconfig = require('./tsconfig.json');
 const tsconfigPaths = require('tsconfig-paths');