diff --git a/server/src/routes/products.ts b/server/src/routes/products.ts
index 72730d9..2eea52e 100644
--- a/server/src/routes/products.ts
+++ b/server/src/routes/products.ts
@@ -91,6 +91,7 @@ productsRouter.post("/products", (req, res) => {
 });
 
 type UpdateBody = Partial<{
+  sku: string;
   type: string;
   kind: "bulk" | "discrete";
   strainId: string | null;
@@ -105,13 +106,21 @@ productsRouter.patch("/products/:id", (req, res) => {
   const existing = db
     .prepare<
       [string],
-      { id: string; type: string; kind: string; strain_id: string; brand_id: string | null }
+      { id: string; sku: string; type: string; kind: string; strain_id: string; brand_id: string | null }
     >(
-      `SELECT id, type, kind, strain_id, brand_id FROM products WHERE id = ?`,
+      `SELECT id, sku, type, kind, strain_id, brand_id FROM products WHERE id = ?`,
     )
     .get(id);
   if (!existing) return res.status(404).json({ error: "product not found" });
 
+  const nextSku = typeof body.sku === "string" && body.sku.trim() ? body.sku.trim() : existing.sku;
+  if (nextSku !== existing.sku) {
+    const duplicate = db
+      .prepare<[string, string], { id: string }>("SELECT id FROM products WHERE sku = ? AND id != ?")
+      .get(nextSku, id);
+    if (duplicate) return res.status(409).json({ error: "sku already exists" });
+  }
+
   const nextType = typeof body.type === "string" && body.type ? body.type : existing.type;
   const nextKind: "bulk" | "discrete" =
     body.kind === "bulk" || body.kind === "discrete"
@@ -144,8 +153,8 @@ productsRouter.patch("/products/:id", (req, res) => {
   }
 
   db.prepare(
-    `UPDATE products SET type = ?, kind = ?, strain_id = ?, brand_id = ? WHERE id = ?`,
-  ).run(nextType, nextKind, nextStrainId, nextBrandId, id);
+    `UPDATE products SET sku = ?, type = ?, kind = ?, strain_id = ?, brand_id = ? WHERE id = ?`,
+  ).run(nextSku, nextType, nextKind, nextStrainId, nextBrandId, id);
 
   res.json({ ok: true });
 });
diff --git a/web/src/api.ts b/web/src/api.ts
index f73527b..cc59c0e 100644
--- a/web/src/api.ts
+++ b/web/src/api.ts
@@ -38,6 +38,7 @@ export const api = {
   updateProduct: (
     id: string,
     body: Partial<{
+      sku: string;
       type: string;
       kind: "bulk" | "discrete";
       strainId: string | null;
diff --git a/web/src/components/modals/SkuModals.tsx b/web/src/components/modals/SkuModals.tsx
index 92d9e0b..6535bf9 100644
--- a/web/src/components/modals/SkuModals.tsx
+++ b/web/src/components/modals/SkuModals.tsx
@@ -169,6 +169,7 @@ export function EditSkuModal({
   const qc = useQueryClient();
   const strain = data.strains.find((s) => s.id === product.strainId);
 
+  const [skuValue, setSkuValue] = useState(product.sku);
   const [strainName, setStrainName] = useState(strain?.name ?? "");
   const [brandId, setBrandId] = useState(product.brandId ?? "");
   const [typeId, setTypeId] = useState(product.type);
@@ -188,6 +189,7 @@ export function EditSkuModal({
   const updateProduct = useMutation({
     mutationFn: async () => {
       await api.updateProduct(product.id, {
+        sku: skuValue.trim(),
         type: typeId,
         kind: selectedType.kind,
         strainName: strainName.trim(),
@@ -221,11 +223,18 @@ export function EditSkuModal({
           boxShadow: "var(--shadow-lg)",
         }}
       >
-        <ModalHeader title="Edit SKU" eyebrow={`SKU · ${product.sku}`} onClose={onClose} />
+        <ModalHeader title="Edit SKU" eyebrow="SKU" onClose={onClose} />
         <div style={{ padding: 32, display: "grid", gap: 16 }}>
-          <Field label="Strain name">
+          <Field label="SKU code">
             <Input
               autoFocus
+              value={skuValue}
+              onChange={(e) => setSkuValue(e.target.value)}
+              placeholder="e.g. SKU-0042"
+            />
+          </Field>
+          <Field label="Strain name">
+            <Input
               value={strainName}
               onChange={(e) => setStrainName(e.target.value)}
               placeholder="e.g. Blue Dream"
@@ -316,7 +325,7 @@ export function EditSkuModal({
             <Btn
               variant="primary"
               icon="check"
-              disabled={!strainName.trim() || updateProduct.isPending}
+              disabled={!skuValue.trim() || !strainName.trim() || updateProduct.isPending}
               onClick={() => updateProduct.mutate()}
             >
               {updateProduct.isPending ? "Saving..." : "Save changes"}