diff --git a/specification/requirements.txt b/specification/requirements.txt
index 4ca9a65..ae966ac 100644
--- a/specification/requirements.txt
+++ b/specification/requirements.txt
@@ -7,4 +7,4 @@ pytest==9.0.1
 PyYAML==6.0.2
 types-Markdown==3.10.0.20251106
 types-PyYAML==6.0.12.20250915
-virtualenv==20.26.6
+virtualenv==20.36.1