diff --git a/README.md b/README.md
index 3fb0340..abed325 100644
--- a/README.md
+++ b/README.md
@@ -169,7 +169,7 @@ interface UseFixedHeaderOptions {
     *
     * @default false
     */
-   transitionOpacity: Ref<boolean> | boolean
+   transitionOpacity: boolean | Ref<boolean> | ComputedRef<boolean>
 }
 ```
 
diff --git a/packages/vue-use-fixed-header/src/types.ts b/packages/vue-use-fixed-header/src/types.ts
index b73eeb6..17190b2 100644
--- a/packages/vue-use-fixed-header/src/types.ts
+++ b/packages/vue-use-fixed-header/src/types.ts
@@ -22,5 +22,5 @@ export interface UseFixedHeaderOptions<T = any> {
     *
     * @default false
     */
-   transitionOpacity: boolean
+   transitionOpacity: boolean | Ref<boolean> | ComputedRef<boolean>
 }