diff --git a/client/src/pages/project-detail/item-prices-modal.tsx b/client/src/pages/project-detail/item-prices-modal.tsx
index e4bd09c..1f96afb 100644
--- a/client/src/pages/project-detail/item-prices-modal.tsx
+++ b/client/src/pages/project-detail/item-prices-modal.tsx
@@ -5,10 +5,16 @@ import { ItemPricesPanel } from './item-prices-panel';
 interface ItemPricesModalProps {
   isOpen: boolean;
   item: Item | null;
+  projectId: string | undefined;
   onClose: () => void;
 }
 
-export function ItemPricesModal({ isOpen, item, onClose }: ItemPricesModalProps) {
+export function ItemPricesModal({
+  isOpen,
+  item,
+  projectId,
+  onClose
+}: ItemPricesModalProps) {
   useEffect(() => {
     if (!isOpen) {
       return;
@@ -53,7 +59,7 @@ export function ItemPricesModal({ isOpen, item, onClose }: ItemPricesModalProps)
             <h2 className="text-xl font-semibold text-slate-900">Edit Item Prices</h2>
             <p className="text-sm text-slate-500">{itemTitle}</p>
           </header>
-          <ItemPricesPanel itemId={item.id} />
+          <ItemPricesPanel itemId={item.id} projectId={projectId} />
         </div>
       </div>
     </div>
diff --git a/client/src/pages/project-detail/item-prices-panel.tsx b/client/src/pages/project-detail/item-prices-panel.tsx
index bb4e086..796dce8 100644
--- a/client/src/pages/project-detail/item-prices-panel.tsx
+++ b/client/src/pages/project-detail/item-prices-panel.tsx
@@ -6,9 +6,10 @@ const priceConditionOptions: PriceCondition[] = ['new', 'used'];
 
 interface ItemPricesPanelProps {
   itemId: string;
+  projectId: string | undefined;
 }
 
-export function ItemPricesPanel({ itemId }: ItemPricesPanelProps) {
+export function ItemPricesPanel({ itemId, projectId }: ItemPricesPanelProps) {
   const [condition, setCondition] = useState<PriceCondition>('new');
   const [amount, setAmount] = useState('');
   const [currency, setCurrency] = useState('USD');
@@ -17,7 +18,7 @@ export function ItemPricesPanel({ itemId }: ItemPricesPanelProps) {
   const [formError, setFormError] = useState<string | null>(null);
 
   const pricesQuery = useItemPricesQuery(itemId, true);
-  const createPriceMutation = useCreateItemPriceMutation(itemId);
+  const createPriceMutation = useCreateItemPriceMutation(itemId, projectId);
 
   const prices = pricesQuery.data?.data ?? [];
   const creationError = useMemo(
diff --git a/client/src/pages/project-detail/project-detail-page.tsx b/client/src/pages/project-detail/project-detail-page.tsx
index 01b31ee..41f5c23 100644
--- a/client/src/pages/project-detail/project-detail-page.tsx
+++ b/client/src/pages/project-detail/project-detail-page.tsx
@@ -314,6 +314,7 @@ export function ProjectDetailPage() {
       <ItemPricesModal
         isOpen={Boolean(priceModalItem)}
         item={priceModalItem}
+        projectId={projectId}
         onClose={handlePricesModalClose}
       />
     </div>
diff --git a/client/src/query/item-prices.ts b/client/src/query/item-prices.ts
index 2eca526..939a88f 100644
--- a/client/src/query/item-prices.ts
+++ b/client/src/query/item-prices.ts
@@ -1,10 +1,11 @@
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
 import {
   createItemPrice,
   fetchItemPrices,
   type CreateItemPricePayload,
   type ItemPricesResponse
 } from '../api/item-prices';
-import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { projectsKeys } from './projects';
 
 const DEFAULT_LIMIT = 50;
 
@@ -23,7 +24,10 @@ export const useItemPricesQuery = (
     queryFn: ({ signal }) => fetchItemPrices(itemId!, { limit: DEFAULT_LIMIT, offset: 0, signal })
   });
 
-export const useCreateItemPriceMutation = (itemId: string | undefined) => {
+export const useCreateItemPriceMutation = (
+  itemId: string | undefined,
+  projectId: string | undefined
+) => {
   const queryClient = useQueryClient();
 
   return useMutation({
@@ -39,6 +43,10 @@ export const useCreateItemPriceMutation = (itemId: string | undefined) => {
         return;
       }
       queryClient.invalidateQueries({ queryKey: itemPricesKeys.list(itemId) });
+      if (projectId) {
+        queryClient.invalidateQueries({ queryKey: projectsKeys.items(projectId) });
+        queryClient.invalidateQueries({ queryKey: projectsKeys.detail(projectId) });
+      }
     }
   });
 };