diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0da1d89..74a7eb8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,10 @@ adding additional type guards.
 
 ## Unreleased
 
+### Changed
+
+- Updated transaction revision error contract coverage to reflect that server guidance lists `past_due` as a revisable status. The SDK continues to pass server error codes and details through unchanged.
+
 ---
 
 ## 3.8.0 - 2026-04-20
diff --git a/package.json b/package.json
index ce057b0..207790d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@paddle/paddle-node-sdk",
-  "version": "3.8.0",
+  "version": "3.8.1",
   "description": "A Node.js SDK that you can use to integrate Paddle Billing with applications written in server-side JavaScript.",
   "main": "dist/cjs/index.cjs.node.js",
   "module": "dist/esm/index.esm.node.js",
diff --git a/src/__tests__/internal/base-resource.test.ts b/src/__tests__/internal/base-resource.test.ts
index 77c30cd..c4f88b1 100644
--- a/src/__tests__/internal/base-resource.test.ts
+++ b/src/__tests__/internal/base-resource.test.ts
@@ -92,6 +92,30 @@ describe('BaseResource', () => {
     }
   });
 
+  test('passes through transaction revision error details unchanged', async () => {
+    const detail = "You can't revise a transaction that's not in the status of `billed`, `past_due` or `completed`";
+    const mockResponse = {
+      status: 400,
+      headers: new Map(),
+      json: jest.fn().mockResolvedValue({
+        error: {
+          type: 'request_error',
+          code: 'transaction_invalid_status_to_revise',
+          detail,
+          documentation_url: 'https://developer.paddle.com/errors/transactions/transaction_invalid_status_to_revise',
+        },
+        meta: { request_id: 'req_3' },
+      }),
+    };
+
+    mockFetch.mockResolvedValue(mockResponse);
+
+    await expect(resource.trigger('/transactions/txn_1/revise')).rejects.toMatchObject({
+      code: 'transaction_invalid_status_to_revise',
+      detail,
+    });
+  });
+
   test('successful responses pass through handleResponse', async () => {
     const mockResponse = {
       status: 200,