diff --git a/packages/triple-document/src/elements/sticky-tabs.tsx b/packages/triple-document/src/elements/sticky-tabs.tsx
index 88b5317fb4..2ac3d09cdb 100644
--- a/packages/triple-document/src/elements/sticky-tabs.tsx
+++ b/packages/triple-document/src/elements/sticky-tabs.tsx
@@ -125,7 +125,7 @@ export default function StickyTabs({
         position: 'sticky',
         top: headerHeight || 0,
         left: 0,
-        zIndex: 2,
+        zIndex: 3,
         background: '#fff',
       }}
     >