diff --git a/requirements.txt b/requirements.txt
index ac473bef..ebe11d13 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -74,7 +74,7 @@ typed-ast==1.4.2
 typing-extensions==3.7.4.3
 urllib3==1.26.4
 venusian==3.0.0
-virtualenv==20.4.2
+virtualenv==20.4.3
 waitress==2.0.0
 wcwidth==0.2.5
 WebOb==1.8.7