diff --git a/web/src/api.ts b/web/src/api.ts
index d938be1..c931b3a 100644
--- a/web/src/api.ts
+++ b/web/src/api.ts
@@ -1,7 +1,7 @@
 import type { Bootstrap, AuditMode } from "./types.js";
 
 export type BatchOp =
-  | { action: "update"; id: string; fields: Partial<{ shopId: string | null; binId: string | null; price: number; thc: number; cbd: number; totalCannabinoids: number }> }
+  | { action: "update"; id: string; fields: Partial<{ shopId: string | null; binId: string | null; price: number; thc: number; cbd: number; totalCannabinoids: number; purchaseDate: string }> }
   | { action: "checkout"; id: string; date: string }
   | { action: "checkin"; id: string; date: string; binId: string }
   | { action: "finish"; id: string; date: string; rating?: number; notes?: string }
diff --git a/web/src/components/modals/BulkEditModal.tsx b/web/src/components/modals/BulkEditModal.tsx
index 7053755..4920efa 100644
--- a/web/src/components/modals/BulkEditModal.tsx
+++ b/web/src/components/modals/BulkEditModal.tsx
@@ -25,6 +25,7 @@ export function BulkEditModal({
   const [thc, setThc] = useState("");
   const [cbd, setCbd] = useState("");
   const [totalCannabinoids, setTotalCannabinoids] = useState("");
+  const [purchaseDate, setPurchaseDate] = useState("");
   const [error, setError] = useState<string | null>(null);
 
   const save = useMutation({
@@ -36,6 +37,7 @@ export function BulkEditModal({
       if (thc !== "") fields.thc = parseFloat(thc);
       if (cbd !== "") fields.cbd = parseFloat(cbd);
       if (totalCannabinoids !== "") fields.totalCannabinoids = parseFloat(totalCannabinoids);
+      if (purchaseDate) fields.purchaseDate = purchaseDate;
 
       if (Object.keys(fields).length === 0) {
         return Promise.reject(new Error("No fields to update — fill in at least one field."));
@@ -114,7 +116,7 @@ export function BulkEditModal({
           <div className="smallcaps" style={{ color: "var(--ink-3)", marginBottom: 16 }}>
             Values
           </div>
-          <div style={{ display: "grid", gridTemplateColumns: "repeat(4, 1fr)", gap: 16 }}>
+          <div style={{ display: "grid", gridTemplateColumns: "repeat(5, 1fr)", gap: 16 }}>
             <Field label="Price ($)">
               <Input
                 type="number"
@@ -125,6 +127,13 @@ export function BulkEditModal({
                 onChange={(e) => setPrice(e.target.value)}
               />
             </Field>
+            <Field label="Purchase date">
+              <Input
+                type="date"
+                value={purchaseDate}
+                onChange={(e) => setPurchaseDate(e.target.value)}
+              />
+            </Field>
             <Field label="THC %">
               <Input
                 type="number"