diff --git a/lightrag_webui/src/components/ui/UserPromptInputWithHistory.tsx b/lightrag_webui/src/components/ui/UserPromptInputWithHistory.tsx
index 060f9060..a4e45da8 100644
--- a/lightrag_webui/src/components/ui/UserPromptInputWithHistory.tsx
+++ b/lightrag_webui/src/components/ui/UserPromptInputWithHistory.tsx
@@ -165,7 +165,7 @@ export default function UserPromptInputWithHistory({
 
       {/* Dropdown */}
       {isOpen && history.length > 0 && (
-        <div className="absolute top-full left-0 right-0 z-50 mt-0.5 bg-gray-100 dark:bg-gray-900 border border-gray-300 dark:border-gray-700 rounded-md shadow-lg max-h-60 overflow-auto min-w-0">
+        <div className="absolute top-full left-0 right-0 z-50 mt-0.5 bg-gray-100 dark:bg-gray-900 border border-gray-300 dark:border-gray-700 rounded-md shadow-lg max-h-96 overflow-auto min-w-0">
           {history.map((prompt, index) => (
             <div
               key={index}
diff --git a/lightrag_webui/src/stores/settings.ts b/lightrag_webui/src/stores/settings.ts
index 123a15db..79d3f3d1 100644
--- a/lightrag_webui/src/stores/settings.ts
+++ b/lightrag_webui/src/stores/settings.ts
@@ -220,9 +220,9 @@ const useSettingsStoreBase = create<SettingsState>()(
           // Add to beginning
           newHistory.unshift(prompt)
 
-          // Keep only last 8 items
-          if (newHistory.length > 8) {
-            newHistory.splice(8)
+          // Keep only last 12 items
+          if (newHistory.length > 12) {
+            newHistory.splice(12)
           }
 
           return { userPromptHistory: newHistory }