diff --git a/requirements.txt b/requirements.txt
index 2abaef0..d449234 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ nbconvert==5.6.1
 nbformat==5.0.4
 netCDF4==1.5.3
 notebook==6.0.3
-numpy==1.18.1
+numpy==1.22.0
 packaging==20.1
 pandas==1.0.1
 pandocfilters==1.4.2