diff --git a/frontend/lib/api/classes/items.ts b/frontend/lib/api/classes/items.ts
index b7cc17d..1a49f26 100644
--- a/frontend/lib/api/classes/items.ts
+++ b/frontend/lib/api/classes/items.ts
@@ -4,6 +4,7 @@ import {
   ItemAttachmentUpdate,
   ItemCreate,
   ItemOut,
+  ItemPatch,
   ItemSummary,
   ItemUpdate,
   MaintenanceEntry,
@@ -138,6 +139,20 @@ export class ItemsApi extends BaseAPI {
     return payload;
   }
 
+  async patch(id: string, item: ItemPatch) {
+    const resp = await this.http.patch<ItemPatch, ItemOut>({
+      url: route(`/items/${id}`),
+      body: this.dropFields(item),
+    });
+
+    if (!resp.data) {
+      return resp;
+    }
+
+    resp.data = parseDate(resp.data, ["purchaseTime", "soldTime", "warrantyExpires"]);
+    return resp;
+  }
+
   import(file: File | Blob) {
     const formData = new FormData();
     formData.append("csv", file);
diff --git a/frontend/lib/api/types/data-contracts.ts b/frontend/lib/api/types/data-contracts.ts
index 98fad70..a49fadf 100644
--- a/frontend/lib/api/types/data-contracts.ts
+++ b/frontend/lib/api/types/data-contracts.ts
@@ -119,6 +119,11 @@ export interface ItemOut {
   warrantyExpires: Date | string;
 }
 
+export interface ItemPatch {
+  id: string;
+  quantity: number | null;
+}
+
 export interface ItemSummary {
   archived: boolean;
   createdAt: Date | string;
diff --git a/frontend/lib/requests/requests.ts b/frontend/lib/requests/requests.ts
index 32b79bc..8aecda1 100644
--- a/frontend/lib/requests/requests.ts
+++ b/frontend/lib/requests/requests.ts
@@ -3,6 +3,7 @@ export enum Method {
   POST = "POST",
   PUT = "PUT",
   DELETE = "DELETE",
+  PATCH = "PATCH",
 }
 
 export type ResponseInterceptor = (r: Response, rq?: RequestInit) => void;
@@ -57,12 +58,16 @@ export class Requests {
     return this.do<U>(Method.PUT, args);
   }
 
+  public patch<T, U>(args: RequestArgs<T>): Promise<TResponse<U>> {
+    return this.do<U>(Method.PATCH, args);
+  }
+
   public delete<T>(args: RequestArgs<T>): Promise<TResponse<T>> {
     return this.do<T>(Method.DELETE, args);
   }
 
   private methodSupportsBody(method: Method): boolean {
-    return method === Method.POST || method === Method.PUT;
+    return method === Method.POST || method === Method.PUT || method === Method.PATCH;
   }
 
   private async do<T>(method: Method, rargs: RequestArgs<unknown>): Promise<TResponse<T>> {