diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index 4b1634b3..71bccfa9 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -2,4 +2,4 @@ pip==21.1.2
 nox==2020.12.31
 nox-poetry==0.8.6
 poetry==1.1.6
-virtualenv==20.4.7
+virtualenv==20.20.0