diff --git a/requirements.txt b/requirements.txt
index 96ee241..eaf2f65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask==0.12
 Jinja2==2.9.5
-numpy==1.13.1
+numpy==1.21.0
 scikit-learn==0.18.1
 scipy==0.18.1
 virtualenv==15.1.0