diff --git a/requirements.txt b/requirements.txt
index ef8f6f9..f5dfcf9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 pillow == 4.1.1
 xmltodict == 0.11.0
-numpy == 1.13.0
+numpy == 1.22.0
 matplotlib == 2.0.2
 shapely == 1.5.13
 fiona == 1.7.8