diff --git a/requirements.txt b/requirements.txt
index d59c370..c35dc81 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 boto3==1.7.82
 Fiona==1.7.13
 mercantile==1.0.4
-numpy==1.15.1
+numpy==1.22.0
 pyproj==1.9.5.1
 rtree==0.8.3
 shapely==1.6.4.post2