diff --git a/python-flask-server/requirements.txt b/python-flask-server/requirements.txt
index 995dc64d6559ef7a5adec5e2047b827d7819e147..36ffa6cb11691d3e1a456835317a125b426bc774 100644
--- a/python-flask-server/requirements.txt
+++ b/python-flask-server/requirements.txt
@@ -1,3 +1,4 @@
 connexion == 1.0.129
 python_dateutil == 2.6.0
 setuptools >= 21.0.0
+pandas >= 0.19.2