diff --git a/src/index.js b/src/index.js
index 279dd20628c7c534ce6b2391173989a20a5b5481..f01802a1619dbbf3f8d512fab6a137f1410477ab 100644
--- a/src/index.js
+++ b/src/index.js
@@ -10,6 +10,7 @@ const { send: sendEmail } = require('@pubsweet/component-send-email')
 const app = require('./app')
 const { boss, connectToJobQueue } = require('./pgboss')
 const { BaseModel, useTransaction } = require('./models')
+const modelTypes = require('./models/_helpers/types')
 
 const createJWT = authentication.token.create
 
@@ -18,6 +19,7 @@ module.exports = {
   createJWT,
   pubsubManager,
   startServer,
+  modelTypes,
 
   sendEmail,