diff --git a/apps/app/components/gantt-chart/blocks/index.tsx b/apps/app/components/gantt-chart/blocks/index.tsx
index d5eadf2a0d..31e7839cc9 100644
--- a/apps/app/components/gantt-chart/blocks/index.tsx
+++ b/apps/app/components/gantt-chart/blocks/index.tsx
@@ -18,7 +18,7 @@ export const GanttChartBlocks: FC<{
 
   return (
     <div
-      className="relative z-10 mt-[58px] h-full w-[4000px] divide-x divide-gray-300 overflow-hidden overflow-y-auto"
+      className="relative z-[5] mt-[58px] h-full w-[4000px] divide-x divide-gray-300 overflow-hidden overflow-y-auto"
       style={{ width: `${itemsContainerWidth}px` }}
     >
       <div className="w-full">