diff --git a/requirements.txt b/requirements.txt
index a42dc99..5128605 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,17 +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, != 5.0.3
 click
 flask
 humanize
+importlib_metadata < 5.0  # breaks compatibility with current kombu
+                          # https://github.com/celery/kombu/issues/1600
 pika >= 1.1.0
 psycopg2
 pyyaml
 requests
 sentry-sdk
 setuptools
 typing-extensions