diff --git a/packages/runs/src/runs.mjs b/packages/runs/src/runs.mjs
index 03730c33..08a71fab 100644
--- a/packages/runs/src/runs.mjs
+++ b/packages/runs/src/runs.mjs
@@ -2,7 +2,7 @@ import fs from "node:fs";
 import { RunsError } from "./errors.mjs";
 import { RUNS_DIRNAME, isMissing, readJsonObject, resolveInside } from "./paths.mjs";
 
-export const RUN_ID_PATTERN = /^r-[A-Za-z0-9][A-Za-z0-9._-]{0,63}$/;
+export const RUN_ID_PATTERN = /^r-[A-Za-z0-9][A-Za-z0-9._-]{0,64}$/;
 export const RUN_DOCUMENTS = ["result.json", "task.json", "mission.json"];
 
 export function isRunId(value) {