diff --git a/addon/index.d.ts b/addon/index.d.ts
index 97f0ef505..71e835ba7 100644
--- a/addon/index.d.ts
+++ b/addon/index.d.ts
@@ -1,3 +1,4 @@
+import EmberObject from '@ember/object';
 import ComputedProperty from '@ember/object/computed';
 
 export type TaskGenerator<T> = Generator<any, T, any>;
@@ -29,7 +30,7 @@ export type EncapsulatedTaskDescriptorReturnType<T extends EncapsulatedTaskDescr
  * method on this object to cancel all running or enqueued
  * {@linkcode TaskInstance}s.
  */
-export interface Task<T, Args extends any[]> {
+export interface Task<T, Args extends any[]> extends EmberObject {
   /**
    * `true` if any current task instances are running.
    */
@@ -141,7 +142,7 @@ export interface Task<T, Args extends any[]> {
  * });
  * ```
  */
-export interface TaskGroup<T> {
+export interface TaskGroup<T> extends EmberObject {
   /**
    * `true` if any current task instances are running.
    */
@@ -234,7 +235,7 @@ export interface TaskGroup<T> {
  * because concurrency policy enforced by a
  * {@linkcode TaskProperty Task Modifier} canceled the task instance.
  */
-export interface TaskInstance<T> extends Promise<T> {
+export interface TaskInstance<T> extends Promise<T>, EmberObject {
   /**
    * If this TaskInstance runs to completion by returning a property
    * other than a rejecting promise, this property will be set
diff --git a/tests/types/ember-concurrency-test.ts b/tests/types/ember-concurrency-test.ts
index 4b56b6283..8d6fe1917 100644
--- a/tests/types/ember-concurrency-test.ts
+++ b/tests/types/ember-concurrency-test.ts
@@ -112,6 +112,12 @@ module('unit tests', () => {
     expect(t.lastIncomplete).toEqualTypeOf<MyTaskInstance | null>();
     expect(t.performCount).toBeNumber();
 
+    expect(t.get).toBeCallableWith('isRunning');
+    expect(t.get('isRunning')).toBeBoolean();
+
+    // @ts-expect-error
+    t.get('nonexistentProperty');
+
     expect(t.cancelAll).toBeCallableWith();
     expect(t.cancelAll).toBeCallableWith({});
     expect(t.cancelAll).toBeCallableWith({ reason: 'why do you care' });
@@ -168,6 +174,12 @@ module('unit tests', () => {
     expect(tg.lastIncomplete).toEqualTypeOf<MyTaskInstance | null>();
     expect(tg.performCount).toBeNumber();
 
+    expect(tg.get).toBeCallableWith('isRunning');
+    expect(tg.get('isRunning')).toEqualTypeOf<boolean>()
+
+    // @ts-expect-error
+    tg.get('nonexistentProperty');
+
     expect(tg.cancelAll).toBeCallableWith();
     expect(tg.cancelAll).toBeCallableWith({});
     expect(tg.cancelAll).toBeCallableWith({ reason: 'why do you care' });
@@ -206,6 +218,12 @@ module('unit tests', () => {
     expect(t.state).toEqualTypeOf<'dropped' | 'canceled' | 'finished' | 'running' | 'waiting'>();
     expect(t.isDropped).toBeBoolean();
 
+    expect(t.get).toBeCallableWith('value');
+    expect(t.get('value')).toEqualTypeOf<string | null>()
+
+    // @ts-expect-error
+    t.get('nonexistentProperty');
+
     expect(t.cancel).toBeCallableWith();
     expect(t.cancel).toBeCallableWith('why do you care');
     expect(t.cancel).parameters.toEqualTypeOf<[string?]>();