diff --git a/requirements.txt b/requirements.txt
index 3c51a93..6cb1624 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ nbconvert==5.2.1
 nbformat==4.4.0
 nbstripout==0.3.1
 notebook==5.0.0
-numpy==1.13.1
+numpy==1.21.0
 pandas==0.20.3
 pandasticsearch==0.3.1
 pandocfilters==1.4.2