diff --git a/requirements.txt b/requirements.txt
index f9d30d5..af36c05 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 apscheduler==2.1.0
-numpy==1.8.2
+numpy==1.21.0
 pydispatcher>=2.0.3
 pyyaml>=3.11
 netCDF4