diff --git a/src/Cache.ts b/src/Cache.ts
index 7a425cce..e9f32ca8 100644
--- a/src/Cache.ts
+++ b/src/Cache.ts
@@ -4,16 +4,18 @@ import { ApolloPersistOptions, PersistedData } from './types';
 export default class Cache<T> {
   cache: ApolloCache<T>;
   serialize: boolean;
+  includeOptimistic: boolean;
 
-  constructor(options: Pick<ApolloPersistOptions<T>, 'cache' | 'serialize'>) {
-    const { cache, serialize = true } = options;
+  constructor(options: Pick<ApolloPersistOptions<T>, 'cache' | 'serialize' | 'includeOptimistic'>) {
+    const { cache, serialize = true, includeOptimistic = false } = options;
 
     this.cache = cache;
     this.serialize = serialize;
+    this.includeOptimistic = includeOptimistic;
   }
 
   extract(): PersistedData<T> {
-    let data: PersistedData<T> = this.cache.extract() as T;
+    let data: PersistedData<T> = this.cache.extract(this.includeOptimistic) as T;
 
     if (this.serialize) {
       data = JSON.stringify(data) as string;
diff --git a/src/__mocks__/MockCache.ts b/src/__mocks__/MockCache.ts
index e9ed22ae..c7ea47d2 100644
--- a/src/__mocks__/MockCache.ts
+++ b/src/__mocks__/MockCache.ts
@@ -6,11 +6,13 @@ export default class MockCache<T, U extends boolean = true>
 {
   cache: null;
   serialize: boolean;
+  includeOptimistic: boolean;
   data: PersistedData<T>;
 
-  constructor(options: Pick<ApolloPersistOptions<T, U>, 'serialize'>) {
-    const { serialize = true } = options;
+  constructor(options: Pick<ApolloPersistOptions<T, U>, 'serialize' | 'includeOptimistic'>) {
+    const { serialize = true, includeOptimistic = false } = options;
     this.serialize = serialize;
+    this.includeOptimistic = includeOptimistic;
   }
 
   extract(): PersistedData<T> {
diff --git a/src/types/index.ts b/src/types/index.ts
index be79303c..4c4b6300 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -35,4 +35,5 @@ export interface ApolloPersistOptions<
   maxSize?: number | false;
   persistenceMapper?: PersistenceMapperFunction;
   debug?: boolean;
+  includeOptimistic?: boolean;
 }