diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index 82f23ab..368271a 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -1,3 +1,3 @@
 pip==25.1.1
-virtualenv==20.31.2
+virtualenv==20.35.4
 nox==2025.5.1