diff --git a/requirements.txt b/requirements.txt
index 80d6e44..653b182 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,6 @@
 pymongo==3.13.0;python_version<="2.7.18"
 pymongo>=3.13.0;python_version>"2.7.18"
 six
+pandas==0.23.4;python_version<="2.7.18"
+pandas;python_version>"2.7.18"
+openpyxl