diff --git a/.changeset/old-comics-juggle.md b/.changeset/old-comics-juggle.md
new file mode 100644
index 0000000000..c17116cc82
--- /dev/null
+++ b/.changeset/old-comics-juggle.md
@@ -0,0 +1,5 @@
+---
+"@medusajs/js-sdk": patch
+---
+
+fix(js-sdk): fix the API route used in fulfillment.cancel method
diff --git a/packages/core/js-sdk/src/admin/fulfillment.ts b/packages/core/js-sdk/src/admin/fulfillment.ts
index 7998998992..dd993b222e 100644
--- a/packages/core/js-sdk/src/admin/fulfillment.ts
+++ b/packages/core/js-sdk/src/admin/fulfillment.ts
@@ -85,7 +85,7 @@ export class Fulfillment {
     headers?: ClientHeaders
   ) {
     return await this.client.fetch<HttpTypes.AdminFulfillmentResponse>(
-      `/admin/fulfillments/${id}`,
+      `/admin/fulfillments/${id}/cancel`,
       {
         method: "POST",
         body: {},