diff --git a/.github/workflows/constraints.txt b/.github/workflows/constraints.txt
index e105acd..a9e8063 100644
--- a/.github/workflows/constraints.txt
+++ b/.github/workflows/constraints.txt
@@ -2,4 +2,4 @@ pip==26.1.1
 nox==2026.4.10
 nox-poetry==1.2.0
 poetry==2.4.1
-virtualenv==21.3.1
+virtualenv==21.3.3