diff --git a/requirements.txt b/requirements.txt
index c3abad483..7f286c46d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 Django==3.0.6
 simplejson
 chardet
-celery>4.3.0
+celery<5.0,>4.3
 django-celery-results
 django-extensions==2.2.9
 gunicorn==20.0.4