diff --git a/data/national-snowfall-analysis/requirements.txt b/data/national-snowfall-analysis/requirements.txt
index bbafc33..a4c7038 100644
--- a/data/national-snowfall-analysis/requirements.txt
+++ b/data/national-snowfall-analysis/requirements.txt
@@ -8,7 +8,7 @@ cligj==0.5.0
 Fiona==1.8.2
 idna==2.7
 munch==2.3.2
-numpy==1.15.4
+numpy==1.22.0
 pyparsing==2.3.0
 rasterio==1.0.10
 requests==2.20.1