diff --git a/requirements.txt b/requirements.txt
index 9a2224f..7846853 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ monotonic==1.5
 msgpack==0.6.1
 netCDF4==1.5.3
 numcodecs==0.6.4
-numpy==1.17.4
+numpy==1.22.0
 olefile==0.46
 OWSLib==0.18.0
 packaging==20.0