diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index 71ed45ff..d93d3d86 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -2,4 +2,4 @@ pip==21.3.1
 nox==2021.10.1
 nox-poetry==0.9.0
 poetry==1.1.12
-virtualenv==20.12.0
+virtualenv==20.13.0