diff --git a/src/block.tsx b/src/block.tsx
index 09effe0..c7725d0 100644
--- a/src/block.tsx
+++ b/src/block.tsx
@@ -505,6 +505,7 @@ export const Block: React.FC<Block> = props => {
     return (
       <CustomComponent
         renderComponent={renderComponent}
+        blockMap={blockMap}
         blockValue={blockValue as BlockValueProp<typeof blockValue.type>}
         level={level}
       >
diff --git a/src/types.ts b/src/types.ts
index 2157557..104c985 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -346,6 +346,7 @@ export type BlockValueProp<T> = Extract<BlockValueType, { type: T }>;
 
 export interface CustomBlockComponentProps<T extends BlockValueTypeKeys> {
   renderComponent: () => JSX.Element | null;
+  blockMap: BlockMapType;
   blockValue: T extends BlockValueType ? BlockValueProp<T> : BaseValueType;
   level: number;
 }