diff --git a/web/app/components/workflow/hooks/use-available-blocks.ts b/web/app/components/workflow/hooks/use-available-blocks.ts
index 4969cb9d89..3d92142b10 100644
--- a/web/app/components/workflow/hooks/use-available-blocks.ts
+++ b/web/app/components/workflow/hooks/use-available-blocks.ts
@@ -6,7 +6,7 @@ import { BlockEnum } from '../types'
 import { useNodesMetaData } from './use-nodes-meta-data'
 
 const availableBlocksFilter = (nodeType: BlockEnum, inContainer?: boolean) => {
-  if (inContainer && (nodeType === BlockEnum.Iteration || nodeType === BlockEnum.Loop || nodeType === BlockEnum.End || nodeType === BlockEnum.DataSource || nodeType === BlockEnum.KnowledgeBase))
+  if (inContainer && (nodeType === BlockEnum.Iteration || nodeType === BlockEnum.Loop || nodeType === BlockEnum.End || nodeType === BlockEnum.DataSource || nodeType === BlockEnum.KnowledgeBase || nodeType === BlockEnum.HumanInput))
     return false
 
   if (!inContainer && nodeType === BlockEnum.LoopEnd)