diff --git a/requirements.txt b/requirements.txt
index a65850a..6fd25f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,3 +10,4 @@ urllib3>=1.26,<2.0
 openpyxl>=3.1,<4.0
 gunicorn>=26.0.0
 openapi-python-client
+python-dateutil