diff --git a/cpt/requirements.txt b/cpt/requirements.txt
index 9e3b24a..7d3332f 100644
--- a/cpt/requirements.txt
+++ b/cpt/requirements.txt
@@ -1,3 +1,3 @@
-six>=1.10.0,<=1.15.0
+six>=1.10.0,<=1.16.0
 conan>=1.7.0,<2
 tabulate>=0.8.0, <0.9.0