diff --git a/requirements.txt b/requirements.txt
index 84412031..a2a598d5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ PyYAML==5.2
 redis==3.3.11
 requests==2.23.0
 scipy==1.4.1
-six==1.13.0
+six==1.15.0
 SQLAlchemy==1.3.12
 urllib3==1.25.7
 vine==1.3.0