diff --git a/requirements.txt b/requirements.txt
index 71c69331..b029ef2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,7 @@ identify==2.5.24
 idna==3.4
 iniconfig==2.0.0
 Jinja2==3.1.2
+lupa==2.0
 MarkupSafe==2.1.2
 mypy==1.3.0
 mypy-extensions==1.0.0