diff --git a/requirements-pinned.txt b/requirements-pinned.txt
index ae0b5a0c..03911880 100644
--- a/requirements-pinned.txt
+++ b/requirements-pinned.txt
@@ -12,6 +12,6 @@ pynacl==1.3.0             # via securesystemslib
 python-dateutil==2.8.1    # via securesystemslib
 requests==2.23.0
 securesystemslib[colors,crypto,pynacl]==0.15.0
-six==1.14.0
+six==1.15.0
 subprocess32==3.5.4       ; python_version < '3' # via securesystemslib
 urllib3==1.25.9           # via requests