diff --git a/requirements.txt b/requirements.txt
index a075660..98122d2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ jdcal==1.4
 jmespath==0.9.3
 lml==0.0.4
 lxml==4.2.5
-numpy==1.15.2
+numpy==1.22.0
 odfpy==1.3.6
 openpyxl==2.4.9
 pandas==0.23.4