diff --git a/src/mongo_types.ts b/src/mongo_types.ts
index 3c56585a73..8029969e2b 100644
--- a/src/mongo_types.ts
+++ b/src/mongo_types.ts
@@ -128,7 +128,7 @@ export interface FilterOperators<TValue> extends NonObjectIdLikeDocument {
   $in?: ReadonlyArray<TValue>;
   $lt?: TValue;
   $lte?: TValue;
-  $ne?: TValue;
+  $ne?: TValue | null;
   $nin?: ReadonlyArray<TValue>;
   // Logical
   $not?: TValue extends string ? FilterOperators<TValue> | RegExp : FilterOperators<TValue>;