diff --git a/backend/server.js b/backend/server.js
index c99b812..36ff245 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -15,8 +15,10 @@ const pipeline = [];
 const PORT = process.env.PORT || 3002;
 
 // Create Mongo client
-const mongoClient = new MongoClient(mongoUri);
-
+const mongoOptions = {
+  readPreference: 'secondaryPreferred'
+}
+const mongoClient = new MongoClient(mongoUri, mongoOptions);
 
 /*============== CODE ==============*/
 async function run() {