diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index b08e829..7f9f429 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -2,4 +2,4 @@ pip==21.1.3
 nox==2021.6.12
 nox-poetry==0.8.6
 poetry==1.1.7
-virtualenv==20.5.0
+virtualenv==20.6.0