diff --git a/ippisite/requirements-core.txt b/ippisite/requirements-core.txt
index 420730986084e5b37a41b3670e466a1478af65a0..fb04c7463d61c22139f7f586e977a4292fb64daf 100644
--- a/ippisite/requirements-core.txt
+++ b/ippisite/requirements-core.txt
@@ -7,7 +7,7 @@ django-formtools
 django-debug-toolbar
 django-allauth
 # import scripts
-pandas
+pandas==0.23.4
 # web services
 bioservices
 bioblend