diff --git a/requirements.txt b/requirements.txt
index 031ada3..96321ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ isodate==0.6.0
 jsonpickle==1.2
 Markdown==3.3.4
 netCDF4==1.5.7
-numpy==1.22.3
+numpy==1.19.5
 psycopg2-binary==2.8.6
 pyparsing==2.4.7
 pysolr==3.8.1