diff --git a/requirements-dev.txt b/requirements-dev.txt
index aaa80e3..df37bfe 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,7 +12,7 @@ pluggy==0.13.1
 py==1.9.0
 pyparsing==2.4.7
 pytest==6.0.1
-six==1.15.0
+six==1.17.0
 toml==0.10.1
 
 # Coverage