diff --git a/requirements.txt b/requirements.txt
index ebedade6..206c7a72 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 click
 flask
 psycopg2
 python-dateutil
 vcversioner
 aiohttp
 tenacity
-cassandra-driver >= 3.19.0, < 3.21.0
+cassandra-driver >= 3.19.0, != 3.21.0