diff --git a/server/src/__tests__/feedback-service.test.ts b/server/src/__tests__/feedback-service.test.ts
index 898ae0aa..03b4f4c6 100644
--- a/server/src/__tests__/feedback-service.test.ts
+++ b/server/src/__tests__/feedback-service.test.ts
@@ -187,7 +187,11 @@ describe("feedbackService.saveIssueVote", () => {
     const targetCommentId = randomUUID();
     const earlierCommentId = randomUUID();
     const laterCommentId = randomUUID();
-    const runId = randomUUID();
+    // Use a deterministic UUID whose hyphen-separated segments cannot be
+    // mistaken for a phone number by the PII redactor's phone regex.
+    // Random UUIDs occasionally produce digit pairs like "4880-8614" that
+    // cross segment boundaries and match the phone pattern.
+    const runId = "abcde123-face-beef-cafe-abcdef654321";
     const instructionsDir = fs.mkdtempSync(path.join(os.tmpdir(), "paperclip-feedback-instructions-"));
     tempDirs.push(instructionsDir);
     const instructionsPath = path.join(instructionsDir, "AGENTS.md");