diff --git a/src/selfTest.ts b/src/selfTest.ts
index 9164817..e5070b8 100644
--- a/src/selfTest.ts
+++ b/src/selfTest.ts
@@ -112,6 +112,12 @@ export async function runSelfTest(): Promise<void> {
   if (!napcatCli.execute || !napcatCli.useCodex) {
     throw new Error("NapCat upstream audit CLI parser self-check failed");
   }
+  if (
+    napcatCli.artifactRoot !==
+    "/vol1/docker/kt-codex/artifacts/napcat-upstream-sync"
+  ) {
+    throw new Error("NapCat upstream audit artifactRoot CLI parser self-check failed");
+  }
   const napcatCandidateCli = parseNapcatSyncCandidateReviewCliArgs([
     "node",
     "server",