diff --git a/requirements.txt b/requirements.txt
index c9a65e0..962b884 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Jinja2==2.10
 MarkupSafe==1.1.1
 numpy==1.16.2
 pymongo==3.7.2
-PyMySQL==0.9.3
+PyMySQL==1.1.1
 python-engineio==3.5.0
 python-socketio==3.1.2
 requests==2.21.0