diff --git a/requirements.txt b/requirements.txt
index 0ae799c74..1f8f1149d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ Flask-SQLAlchemy==2.3.2
 Flask-WTF==1.0.0
 gunicorn==20.1.0
 gevent==1.4.0
-greenlet==0.4.17
+greenlet==3.3.1
 htmlmin==0.1.12
 idna==2.10
 itsdangerous==2.0.1