diff --git a/requirements.txt b/requirements.txt
index fc493d14..85a4b95f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ psqlgraph==1.2.3
 -e git+https://git@github.com/uc-cdis/cdislogging.git@master#egg=cdislogging
 -e git+https://git@github.com/NCI-GDC/cdisutils.git@f54e393c89939b2200dfae45c6235cbe2bae1206#egg=cdisutils
 -e git+https://git@github.com/uc-cdis/datadictionary.git@0.2.1#egg=gdcdictionary
-gdcdatamodel==1.3.11
+-e git+https://git@github.com/uc-cdis/gdcdatamodel.git@012e1c952072b4149390662f12022c511d8e5fae#egg=gdcdatamodel
 -e git+https://git@github.com/uc-cdis/indexclient.git@1.5.7#egg=indexclient
 -e git+https://git@github.com/NCI-GDC/python-signpostclient.git@ca686f55772e9a7f839b4506090e7d2bb0de5f15#egg=signpostclient
 -e git+https://git@github.com/uc-cdis/storage-client.git@0.1.7#egg=storageclient