diff --git a/packages/cloud_firestore/cloud_firestore/CHANGELOG.md b/packages/cloud_firestore/cloud_firestore/CHANGELOG.md
index e0b8f7590e85..e50dfa3906f4 100644
--- a/packages/cloud_firestore/cloud_firestore/CHANGELOG.md
+++ b/packages/cloud_firestore/cloud_firestore/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.13.2+2
+
+* Fixed crashes when using `FieldValue.arrayUnion` & `FieldValue.arrayRemove` with `DocumentReference` objects
+
 ## 0.13.2+1
 
 * Add Web integration documentation to README.
diff --git a/packages/cloud_firestore/cloud_firestore/example/test_driver/cloud_firestore.dart b/packages/cloud_firestore/cloud_firestore/example/test_driver/cloud_firestore.dart
index 85b31b057c3e..76b37fe67fda 100644
--- a/packages/cloud_firestore/cloud_firestore/example/test_driver/cloud_firestore.dart
+++ b/packages/cloud_firestore/cloud_firestore/example/test_driver/cloud_firestore.dart
@@ -434,5 +434,44 @@ void main() {
       final DocumentSnapshot actual = results[0];
       expect(actual.documentID, 'test-docRef');
     });
+
+    test('FieldValue.arrayUnion with DocumentRefrence', () async {
+      final CollectionReference ref = firestore.collection('messages');
+      await ref.document('test-docRef-1').setData({"message": "1"});
+      await ref.document('test-docRef-2').setData({"message": "2"});
+
+      await ref.document('test-docRef').setData(<String, dynamic>{
+        'children': <DocumentReference>[
+          ref.document("test-docRef-1"),
+        ],
+      });
+
+      await ref.document("test-docRef").updateData({
+        'children': FieldValue.arrayUnion([ref.document('test-docRef-2')])
+      });
+
+      final DocumentSnapshot snapshot = await ref.document("test-docRef").get();
+      expect(snapshot.data['children'].length, equals(2));
+    });
+
+    test('FieldValue.arrayRemove with DocumentRefrence', () async {
+      final CollectionReference ref = firestore.collection('messages');
+      await ref.document('test-docRef-1').setData({"message": "1"});
+      await ref.document('test-docRef-2').setData({"message": "2"});
+
+      await ref.document('test-docRef').setData(<String, dynamic>{
+        'children': <DocumentReference>[
+          ref.document("test-docRef-1"),
+          ref.document("test-docRef-2"),
+        ],
+      });
+
+      await ref.document("test-docRef").updateData({
+        'children': FieldValue.arrayRemove([ref.document('test-docRef-2')])
+      });
+
+      final DocumentSnapshot snapshot = await ref.document("test-docRef").get();
+      expect(snapshot.data['children'].length, equals(1));
+    });
   });
 }
diff --git a/packages/cloud_firestore/cloud_firestore/lib/src/field_value.dart b/packages/cloud_firestore/cloud_firestore/lib/src/field_value.dart
index e278ef651d50..4e1fb4f05940 100644
--- a/packages/cloud_firestore/cloud_firestore/lib/src/field_value.dart
+++ b/packages/cloud_firestore/cloud_firestore/lib/src/field_value.dart
@@ -26,7 +26,7 @@ class FieldValue extends platform.FieldValuePlatform {
   /// will be overwritten with an array containing exactly the specified
   /// elements.
   static FieldValue arrayUnion(List<dynamic> elements) =>
-      FieldValue._(_factory.arrayUnion(elements));
+      FieldValue._(_factory.arrayUnion(_CodecUtility.valueEncode(elements)));
 
   /// Returns a special value that tells the server to remove the given
   /// elements from any array value that already exists on the server.
@@ -35,7 +35,7 @@ class FieldValue extends platform.FieldValuePlatform {
   /// If the field being modified is not already an array it will be overwritten
   /// with an empty array.
   static FieldValue arrayRemove(List<dynamic> elements) =>
-      FieldValue._(_factory.arrayRemove(elements));
+      FieldValue._(_factory.arrayRemove(_CodecUtility.valueEncode(elements)));
 
   /// Returns a sentinel for use with update() to mark a field for deletion.
   static FieldValue delete() => FieldValue._(_factory.delete());
diff --git a/packages/cloud_firestore/cloud_firestore/pubspec.yaml b/packages/cloud_firestore/cloud_firestore/pubspec.yaml
index 0e5fa833a464..febf3e4b49ec 100755
--- a/packages/cloud_firestore/cloud_firestore/pubspec.yaml
+++ b/packages/cloud_firestore/cloud_firestore/pubspec.yaml
@@ -3,7 +3,7 @@ description:
   Flutter plugin for Cloud Firestore, a cloud-hosted, noSQL database with
   live synchronization and offline support on Android and iOS.
 homepage: https://github.com/FirebaseExtended/flutterfire/tree/master/packages/cloud_firestore/cloud_firestore
-version: 0.13.2+1
+version: 0.13.2+2
 
 flutter:
   plugin: