diff --git a/requirements.txt b/requirements.txt
index af2361f..6e93e92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 tornado==3.1.1
 pandas==0.19.2
 scipy==0.18.1
-numpy==1.13.1
+numpy==1.21.0
 python-dateutil==2.6.0
 scikit-learn==0.18.1
 # singledispatch