diff --git a/requirements-test.txt b/requirements-test.txt
index 365ad6f05b0cb0b79ad4977ec5e78eb3eb3d8a94..1eff55452411375b0b08560d06b23ad139e2a5ea 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -19,7 +19,7 @@ prettytable
 pycodestyle==2.6.0
 pyflakes==2.2.0
 pylibscrypt==1.8.0
-six==1.14.0
+six==1.15.0
 pytest
 pytest-mock
 pytest-cov