diff --git a/requirements-dev.txt b/requirements-dev.txt
index ab4c338..f2887a9 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,5 +4,5 @@ pytest            ==4.5.0
 pytest-cov        ==2.7.1
 pytest-mock       ==1.10.4
 pytest-virtualenv ==1.7.0
-virtualenv        ==16.6.0
+virtualenv        ==20.36.1
 pytest-xdist      ==1.28.0