diff --git a/docs/docs/usage-with-mongo.md b/docs/docs/usage-with-mongo.md
index 045fb81dac69..6c41fe3926ec 100644
--- a/docs/docs/usage-with-mongo.md
+++ b/docs/docs/usage-with-mongo.md
@@ -120,17 +120,32 @@ Alternatively you can call `ensureIndexes()` method on the `SchemaGenerator`:
 await orm.getSchemaGenerator().ensureIndexes();
 ```
 
-> You can pass additional index/unique options via `options` parameter:
->
-> `@Unique({ options: { partialFilterExpression: { name: { $exists: true } } }})`
+You can pass additional index/unique options via `options` parameter:
 
-> You can also create text indexes by passing `type` parameter:
->
-> `@Index({ properties: ['name', 'caption'], type: 'text' })`
+```ts
+@Unique({ options: { partialFilterExpression: { name: { $exists: true } } }})
+```
 
-> If you provide only `options` in the index definition, it will be used as is, this allows to define any kind of index:
->
-> `@Index({ options: { point: '2dsphere', title: -1 } })`
+You can also create text indexes by passing `type` parameter:
+
+```ts
+@Index({ properties: ['name', 'caption'], type: 'text' })
+```
+
+If you provide only `options` in the index definition, it will be used as is, this allows to define any kind of index:
+
+```ts
+@Index({ options: { point: '2dsphere', title: -1 } })
+```
+
+To set index weights, you can pass a tuple to the `options` parameter:
+
+```ts
+@Index({ options: [
+  { title: 'text', perex: 'text', key: 1 },
+  { weights: { title: 10, perex: 5 } },
+] })
+```
 
 ## Native collection methods
 
diff --git a/packages/mongodb/src/MongoSchemaGenerator.ts b/packages/mongodb/src/MongoSchemaGenerator.ts
index fd7ba178fac9..f21fd3a69574 100644
--- a/packages/mongodb/src/MongoSchemaGenerator.ts
+++ b/packages/mongodb/src/MongoSchemaGenerator.ts
@@ -142,6 +142,10 @@ export class MongoSchemaGenerator extends AbstractSchemaGenerator<MongoDriver> {
       const properties = Utils.flatten(Utils.asArray(index.properties).map(prop => meta.properties[prop].fieldNames));
       const collection = this.connection.getCollection(meta.name!);
 
+      if (Array.isArray(index.options) && index.options.length === 2 && properties.length === 0) {
+        return res.push([collection.collectionName, collection.createIndex(index.options[0], index.options[1])]);
+      }
+
       if (index.options && properties.length === 0) {
         return res.push([collection.collectionName, collection.createIndex(index.options)]);
       }
diff --git a/tests/entities/FooBar.ts b/tests/entities/FooBar.ts
index 6007248223c0..6ae48d291602 100644
--- a/tests/entities/FooBar.ts
+++ b/tests/entities/FooBar.ts
@@ -1,8 +1,21 @@
 import { ObjectId } from 'bson';
-import { ArrayType, Entity, JsonType, OneToOne, PrimaryKey, Property, SerializedPrimaryKey } from '@mikro-orm/core';
+import {
+  ArrayType,
+  Entity,
+  Index,
+  JsonType,
+  OneToOne,
+  PrimaryKey,
+  Property,
+  SerializedPrimaryKey,
+} from '@mikro-orm/core';
 import { FooBaz } from './FooBaz';
 
 @Entity()
+@Index({ options: [
+  { name: 'text', str: 'text', baz: 1 },
+  { weights: { name: 10, str: 5 } },
+] })
 export default class FooBar {
 
   @PrimaryKey()