diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index e8c5bbe0b11..8f0ea9fa8cb 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -416,6 +416,20 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: SidebarThreadRowP
     },
     [handleThreadClick, orderedProjectThreadKeys, threadRef],
   );
+  const handleRowMouseDown = useCallback((event: React.MouseEvent) => {
+    if (event.button !== 1) return;
+    event.preventDefault();
+  }, []);
+  const handleRowAuxClick = useCallback(
+    (event: React.MouseEvent) => {
+      if (event.button !== 1) return;
+      event.preventDefault();
+      event.stopPropagation();
+      clearConfirmingArchive();
+      void attemptArchiveThread(threadRef);
+    },
+    [attemptArchiveThread, clearConfirmingArchive, threadRef],
+  );
   const handleRowKeyDown = useCallback(
     (event: React.KeyboardEvent) => {
       if (event.key !== "Enter" && event.key !== " ") return;
@@ -555,6 +569,8 @@ const SidebarThreadRow = memo(function SidebarThreadRow(props: SidebarThreadRowP
           isSelected,
         })} relative isolate`}
         onClick={handleRowClick}
+        onMouseDown={handleRowMouseDown}
+        onAuxClick={handleRowAuxClick}
         onKeyDown={handleRowKeyDown}
         onContextMenu={handleRowContextMenu}
       >