diff --git a/requirements.txt b/requirements.txt
index 17626b5..2699a87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ appdirs==1.4.0
 packaging==19.0
 pyparsing==2.1.10
 requests==2.22.0
-six==1.12.0
+six==1.15.0