diff --git a/dev-requirements.txt b/dev-requirements.txt
index 5e072ce..7daf2f0 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -4,10 +4,10 @@ pipenv==2022.4.8; python_version == '3.10'
 pipenv==2022.4.8; python_version == '3.11'
 pipenv==2023.11.15; python_version == '3.12'
 pipenv==2018.11.26; python_version == '2.7'
-virtualenv==20.15.1; python_version == '3.8'
-virtualenv==20.15.1; python_version == '3.9'
-virtualenv==20.15.1; python_version == '3.10'
-virtualenv==20.15.1; python_version == '3.11'
-virtualenv==20.25.0; python_version == '3.12'
-virtualenv==16.2.0; python_version == '2.7'
+virtualenv==20.36.1; python_version == '3.8'
+virtualenv==20.36.1; python_version == '3.9'
+virtualenv==20.36.1; python_version == '3.10'
+virtualenv==20.36.1; python_version == '3.11'
+virtualenv==20.36.1; python_version == '3.12'
+virtualenv==20.36.1; python_version == '2.7'
 mock