diff --git a/requirements_dev.txt b/requirements_dev.txt
index 23f65b9..cffa671 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -33,6 +33,6 @@ snowballstemmer==1.2.1
 Sphinx==1.4.4
 tox==2.3.1
 Unidecode==0.4.19
-virtualenv==15.0.2
+virtualenv==20.28.0
 watchdog==0.8.3
 websocket-client==0.37.0