diff --git a/requirements.txt b/requirements.txt
index 483689c..c99f97d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,19 +1,19 @@
 # Add here external Python modules dependencies, one per line. Module names
 # should match https://pypi.python.org/pypi names. For the full spec or
 # dependency lines, see https://pip.readthedocs.org/en/1.1/requirements.html
 
 attrs
 attrs-strict
-celery >= 4.3
+celery >= 4.3, != 5.0.3
 Click
 elasticsearch > 5.4
 flask
 humanize
 pika >= 1.1.0
 psycopg2
 pyyaml
 setuptools
 typing-extensions
 
 # test dependencies
 # hypothesis