diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index 181d9531..510a2596 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -1,4 +1,4 @@
 pip==21.1.3
 nox==2021.6.12
 poetry==1.1.7
-virtualenv==20.5.0
+virtualenv==20.6.0