diff --git a/src/sweep/prs.ts b/src/sweep/prs.ts
index 77980ad..c3095d8 100644
--- a/src/sweep/prs.ts
+++ b/src/sweep/prs.ts
@@ -29,15 +29,29 @@ const PR_LIST_LIMIT = 500
 const ListedPr = Pr.omit({ baseRefOid: true })
 const RestPull = z.object({ number: z.number(), base: z.object({ sha: z.string() }) })
 
+const REST_PAGE = 100
+
 // `gh pr list --json` on Ubuntu's 2.45 gh has headRefOid but not baseRefOid — unknown field → empty
 // stdout, which the sweep used to log as "auth/network down". Pull base SHAs from REST instead.
+// Page by hand, NOT `--paginate`: gh follows GitHub's Link header verbatim, and that header names
+// api.github.com — so behind an exe.dev GH_HOST proxy, page 2 escapes the proxy, goes out unauthenticated,
+// and 404s the whole call. Only a repo with >100 open PRs ever has a page 2 (bevyl, 5 days of dead sweeps).
 function pullBaseOids(slug: string): Map<number, string> | null {
-  const r = exec('gh', ['api', `repos/${slug}/pulls?state=open&per_page=100`, '--paginate'])
-  if (!r.ok) {
-    return null
+  const bases = new Map<number, string>()
+  for (let page = 1; ; page++) {
+    const r = exec('gh', ['api', `repos/${slug}/pulls?state=open&per_page=${REST_PAGE}&page=${page}`])
+    if (!r.ok) {
+      log(`gh api pulls failed — aborting sweep: ${r.combined.trim().split('\n')[0] ?? 'unknown error'}`)
+      return null
+    }
+    const pulls = z.array(RestPull).parse(JSON.parse(r.stdout))
+    for (const p of pulls) {
+      bases.set(p.number, p.base.sha)
+    }
+    if (pulls.length < REST_PAGE) {
+      return bases
+    }
   }
-  const pulls = z.array(RestPull).parse(JSON.parse(r.stdout))
-  return new Map(pulls.map((p) => [p.number, p.base.sha]))
 }
 
 export function listPrs(cfg: Config): Pr[] | null {
@@ -62,7 +76,6 @@ export function listPrs(cfg: Config): Pr[] | null {
   const listed = z.array(ListedPr).parse(JSON.parse(r.stdout))
   const bases = pullBaseOids(cfg.slug)
   if (bases === null) {
-    log('gh api pulls failed (auth/network down?) — aborting sweep')
     return null
   }
   const out: Pr[] = []