diff --git a/requirements/base.txt b/requirements/base.txt
index 82bcb7f..28b7baf 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -24,7 +24,7 @@ coreapi==2.3.3  # https://github.com/core-api/python-client
 # ------------------------------------------------------------------------------
 celery==4.4.7  # pyup: < 5.0  # https://github.com/celery/celery
 django-celery-beat==2.0.0  # https://github.com/celery/django-celery-beat
-flower==0.9.4  # https://github.com/mher/flower
+flower==1.1.0  # https://github.com/mher/flower
 django-timezone-field==4.0  # https://github.com/mfogel/django-timezone-field/
 
 # read osm file