diff --git a/requirements.txt b/requirements.txt
index 0710706..289971d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 et-xmlfile==1.0.1
 jdcal==1.4.1
-numpy==1.16.3
+numpy==1.21.0
 openpyxl==2.6.2
 pandas==0.24.2
 python-dateutil==2.8.0