diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index 1327091..9057d8a 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -2,4 +2,4 @@ pip==20.2.4
 nox==2020.8.22
 nox-poetry==0.5.0
 poetry==1.1.2
-virtualenv==20.1.0
+virtualenv==20.4.2