diff --git a/requirements-dev.txt b/requirements-dev.txt
index 430f9ae..dd2cda6 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -14,6 +14,6 @@ PyYAML==6.0.3
 responses==0.25.8
 six==1.17.0
 toml==0.10.2
-virtualenv==20.34.0
+virtualenv==20.35.4
 
 -r requirements.txt