diff --git a/worker/games.py b/worker/games.py
index 3e82c64f3..5521117d5 100644
--- a/worker/games.py
+++ b/worker/games.py
@@ -1428,7 +1428,7 @@ def parse_options(s):
     if run_errors:
         raise RunException("\n".join(run_errors))
 
-    if base_nps < 208082 / (1 + math.tanh((worker_concurrency - 1) / 8)):
+    if base_nps < 208082 / (1 + 3 * math.tanh((worker_concurrency - 1) / 8)):
         raise FatalException(
             "This machine is too slow ({} nps / thread) to run fishtest effectively - sorry!".format(
                 base_nps
diff --git a/worker/sri.txt b/worker/sri.txt
index dd348cd87..9dbda80d6 100644
--- a/worker/sri.txt
+++ b/worker/sri.txt
@@ -1 +1 @@
-{"__version": 250, "updater.py": "Mg+pWOgGA0gSo2TuXuuLCWLzwGwH91rsW1W3ixg3jYauHQpRMtNdGnCfuD1GqOhV", "worker.py": "rRWsXlFkv+whgfQS9IIJVEWnbquhlDa0DYRkkJ43/L7NTRR9pt2+sA2hqHH0x9M/", "games.py": "9/tQ9khEGA5C78gyhsPMVqLU1OJQxz9szGzZ+xGV2d3RGgZseQr7C++oJoyIjNBK"}
+{"__version": 250, "updater.py": "Mg+pWOgGA0gSo2TuXuuLCWLzwGwH91rsW1W3ixg3jYauHQpRMtNdGnCfuD1GqOhV", "worker.py": "rRWsXlFkv+whgfQS9IIJVEWnbquhlDa0DYRkkJ43/L7NTRR9pt2+sA2hqHH0x9M/", "games.py": "XkRn8mnpNzxRVv57Jue3EeDJm7sUhocBd8kYzC2nNfeCfspKKMoxSWZlEZ9Csmvz"}