diff --git a/.gitignore b/.gitignore
index 8a683efdb8a787450da3720fcc21e87e0027b980..d8b6657fb3ba59c1c990a234bdfca1804ac04d74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,6 +88,7 @@ celerybeat-schedule
 .venv
 venv/
 ENV/
+TOKENS
 
 # Spyder project settings
 .spyderproject
diff --git a/django_plotly_dash/version.py b/django_plotly_dash/version.py
index ee1c7e080d0e8d08ad1277ad25497a1b1776388e..1cd442af42076285b970e7e7220cc07c7f3af7fe 100644
--- a/django_plotly_dash/version.py
+++ b/django_plotly_dash/version.py
@@ -23,4 +23,4 @@ SOFTWARE.
 
 '''
 
-__version__ = "1.6.5"
+__version__ = "1.6.6"
diff --git a/setup.py b/setup.py
index c3749e00fb41ed081e81a6a41de063d98f39d65a..6dbfad063c2847b265b1ce55b4e33f643f38a17a 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@ setup(
     'Documentation': 'http://django-plotly-dash.readthedocs.io/',
     },
     install_requires = ['plotly',
-                        'dash>=1.11',
+                        'dash>=1.11,<1.21.0',
                         'dash-core-components',
                         'dash-html-components',
                         'dash-renderer',