diff --git a/requirements.txt b/requirements.txt
index 967fd782804..cb93415e455 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ certifi
 tornado>=6.1
 APScheduler==3.6.3
 pytz>=2018.6
-cachetools==4.2.2
+cachetools>=4.2.2