diff --git a/services/sentence_scoring/requirements.txt b/services/sentence_scoring/requirements.txt
index 588e21c..f0fd0be 100644
--- a/services/sentence_scoring/requirements.txt
+++ b/services/sentence_scoring/requirements.txt
@@ -4,7 +4,7 @@ django-common-helpers==0.9.0
 gunicorn==19.7.1
 neo4jrestclient==2.1.1
 nltk==3.2.1
-numpy==1.11.1
+numpy==1.21.0
 psycopg2==2.7.1
 python-dateutil==2.6.0
 requests==2.13.0