diff --git a/pygrib/requirements.txt b/pygrib/requirements.txt
index 1a636d60..77eaaabe 100644
--- a/pygrib/requirements.txt
+++ b/pygrib/requirements.txt
@@ -4,4 +4,4 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-numpy==1.15.1
+numpy==1.22.0