diff --git a/requirements_dev.txt b/requirements_dev.txt
index bdbf7cd..0c61994 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -54,7 +54,7 @@ tomli==2.0.1
     #   pytest
 tox==3.25.0
     # via -r requirements_dev.in
-virtualenv==20.14.1
+virtualenv==20.27.0
     # via tox
 watchdog==2.1.7
     # via -r requirements_dev.in