diff --git a/libs/shared/ngrx-callstate-store/README.md b/libs/shared/ngrx-callstate-store/README.md
index a6da01f..cc2ff02 100644
--- a/libs/shared/ngrx-callstate-store/README.md
+++ b/libs/shared/ngrx-callstate-store/README.md
@@ -71,6 +71,16 @@ export type CallState = LoadingState | ErrorState;
 
 ## API
 
+### initialization
+
+##### setInitState
+
+The `setInitState` method lets you initialize your custom state if you are not using the constructor.
+
+```typescript
+setInitState = (state: T): void
+```
+
 ### updater
 
 ##### startLoading
diff --git a/libs/shared/ngrx-callstate-store/package.json b/libs/shared/ngrx-callstate-store/package.json
index 1d9a2e3..bc4bbb0 100644
--- a/libs/shared/ngrx-callstate-store/package.json
+++ b/libs/shared/ngrx-callstate-store/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tomalaforge/ngrx-callstate-store",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Enhance NgRx component-store by providing a loading/error state",
   "publishConfig": {
     "access": "public"
diff --git a/libs/shared/ngrx-callstate-store/src/lib/call-state-component-store.ts b/libs/shared/ngrx-callstate-store/src/lib/call-state-component-store.ts
index 08c2259..8061d91 100644
--- a/libs/shared/ngrx-callstate-store/src/lib/call-state-component-store.ts
+++ b/libs/shared/ngrx-callstate-store/src/lib/call-state-component-store.ts
@@ -1,5 +1,11 @@
 /* eslint-disable @typescript-eslint/ban-types */
-import { inject, Inject, Injectable, InjectionToken } from '@angular/core';
+import {
+  inject,
+  Inject,
+  Injectable,
+  InjectionToken,
+  Optional,
+} from '@angular/core';
 import { ComponentStore } from '@ngrx/component-store';
 import { Observable, of, switchMap } from 'rxjs';
 import {
@@ -28,7 +34,7 @@ export class CallStateComponentStore<
   private error = inject(ERROR_TOKEN);
   private flickerTime = inject(FLICKER_TIME);
 
-  constructor(@Inject(INITIAL_TOKEN) initialState: U) {
+  constructor(@Inject(INITIAL_TOKEN) @Optional() initialState: U) {
     super({ callState: 'INIT', ...initialState } as T);
   }
 
@@ -92,4 +98,8 @@ export class CallStateComponentStore<
     } as Partial<T>);
     return err;
   }
+
+  setInitState(initialState: U) {
+    this.setState({ callState: 'INIT', ...initialState } as T);
+  }
 }