diff --git a/backend/requirements.txt b/backend/requirements.txt
index 06b6e86..401095e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,5 +1,5 @@
 certifi==2020.11.8
-dnspython==2.0.0
+dnspython==1.16.0
 eventlet==0.29.1
 greenlet==0.4.17
 python-engineio==3.13.2