diff --git a/lib/model.d.ts b/lib/model.d.ts
index a5b722a..331dab6 100644
--- a/lib/model.d.ts
+++ b/lib/model.d.ts
@@ -287,7 +287,7 @@ export interface IncludeThroughOptions extends Filterable, Projectable {}
 /**
  * Options for eager-loading associated models, also allowing for all associations to be loaded at once
  */
-export type Includeable = typeof Model | Association | IncludeOptions | { all: true }
+export type Includeable = typeof Model | Association | IncludeOptions | { all: boolean; nested?: boolean }
 
 /**
  * Complex include options
diff --git a/test/include.ts b/test/include.ts
index caa68f5..cbc9373 100644
--- a/test/include.ts
+++ b/test/include.ts
@@ -19,3 +19,7 @@ MyModel.findAll({
 MyModel.findAll({
     include: [{ all: true }],
 })
+
+MyModel.findAll({
+    include: [{ all: true, nested: true }],
+})