diff --git a/test/model.findOneAndUpdate.test.js b/test/model.findOneAndUpdate.test.js
index 3069209069d..5c7b9684d31 100644
--- a/test/model.findOneAndUpdate.test.js
+++ b/test/model.findOneAndUpdate.test.js
@@ -2061,4 +2061,24 @@ describe('model: findOneAndUpdate:', function() {
 
     assert.ifError(err);
   });
+
+  it('casts array filters (gh-13219)', async function() {
+    const MyModel = db.model('Test', new Schema({
+      _id: Number,
+      grades: [Number]
+    }));
+
+    await MyModel.create([
+      { _id: 1, grades: [95, 102, 90] }
+    ]);
+
+    await MyModel.findOneAndUpdate(
+      {},
+      { $set: { 'grades.$[element]': 100 } },
+      { arrayFilters: [{ element: { $gt: '100' } }] }
+    );
+
+    const doc = await MyModel.findOne();
+    assert.deepEqual(doc.toObject().grades, [95, 100, 90]);
+  });
 });
diff --git a/test/model.test.js b/test/model.test.js
index 7128891ea79..8dd0ebace36 100644
--- a/test/model.test.js
+++ b/test/model.test.js
@@ -3322,15 +3322,6 @@ describe('Model', function() {
     });
 
     describe('3.6 features', function() {
-      before(async function() {
-        const version = await start.mongodVersion();
-        const mongo36 = version[0] > 3 || (version[0] === 3 && version[1] >= 6);
-
-        if (!mongo36) {
-          this.skip();
-        }
-      });
-
       it('arrayFilter (gh-5965)', async function() {
 
         const MyModel = db.model('Test', new Schema({