diff --git a/CI_REQUIREMENTS.txt b/CI_REQUIREMENTS.txt
index fc9a26e..45c1a99 100644
--- a/CI_REQUIREMENTS.txt
+++ b/CI_REQUIREMENTS.txt
@@ -1,4 +1,3 @@
-six
 typing >= 3.6 ; python_version < "3.7"
 mock; python_version == "2.7"
 futures>=3.1; python_version == "2.7"