diff --git a/docs/GITEA_PR_WORKFLOW.md b/docs/GITEA_PR_WORKFLOW.md
index d5a151f..93322fc 100644
--- a/docs/GITEA_PR_WORKFLOW.md
+++ b/docs/GITEA_PR_WORKFLOW.md
@@ -46,6 +46,11 @@ npm run pr:create -- --base <base> --title "<title>" --body-file <body-file>
 ```
 
 The helper checks for an existing open PR with the same base/head and returns it instead of creating a duplicate.
+If the PR body needs to be changed after creation, update it from a body file:
+
+```powershell
+npm run pr:update -- --number <pr-number> --body-file <body-file>
+```
 
 For stacked work, pass the parent PR branch as `<base>`. For standalone work, pass `main`.
 
diff --git a/package.json b/package.json
index 8cfa5ef..4ed9852 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "pr:auth": "node scripts/gitea-pr.js auth-check",
     "pr:create": "node scripts/gitea-pr.js create",
     "pr:view": "node scripts/gitea-pr.js view",
+    "pr:update": "node scripts/gitea-pr.js update",
     "pr:merge": "node scripts/gitea-pr.js merge",
     "test": "jest --runInBand",
     "test:e2e": "npm --prefix frontend run test:e2e --",
diff --git a/scripts/gitea-pr.js b/scripts/gitea-pr.js
index f2091ec..53bb83d 100644
--- a/scripts/gitea-pr.js
+++ b/scripts/gitea-pr.js
@@ -63,12 +63,16 @@ Commands:
   view --number <pr-number>
     Print basic PR status.
 
+  update --number <pr-number> [--title <title>] [--body-file <path> | --body <text>]
+    Update a PR title/body. Prefer --body-file for multi-line PR bodies.
+
   merge --number <pr-number> --yes [--method merge|squash|rebase] [--delete-branch]
     Merge a PR. The --yes flag is required to avoid accidental merges.
 
 Examples:
   npm run pr:auth
   npm run pr:create -- --base feature-custom-store-locations --title "Allow household switcher reordering" --body-file pr-body.md
+  npm run pr:update -- --number 12 --body-file pr-body.md
   npm run pr:view -- --number 12
   npm run pr:merge -- --number 12 --method merge --delete-branch --yes
 `);
@@ -286,6 +290,31 @@ async function viewPull(flags) {
   );
 }
 
+async function updatePull(flags) {
+  const number = requiredFlag(flags, "number");
+  const payload = {};
+
+  if (flags.title && flags.title !== true) {
+    payload.title = flags.title;
+  }
+
+  if (flags["body-file"] || typeof flags.body === "string") {
+    payload.body = readBody(flags);
+  }
+
+  if (Object.keys(payload).length === 0) {
+    fail("Nothing to update; pass --title, --body, or --body-file");
+  }
+
+  const pull = await apiRequest(
+    "PATCH",
+    repoRoute(`/pulls/${encodeURIComponent(number)}`),
+    payload
+  );
+
+  console.log(`Updated PR #${pull.number}: ${pull.html_url || pull.url}`);
+}
+
 async function mergePull(flags) {
   const number = requiredFlag(flags, "number");
   if (!flags.yes) {
@@ -334,6 +363,9 @@ async function main() {
     case "view":
       await viewPull(flags);
       break;
+    case "update":
+      await updatePull(flags);
+      break;
     case "merge":
       await mergePull(flags);
       break;