Update setup.py

Author: oegedijk

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name='rule_estimator',
-    version='0.4.0',
+    version='0.4.1',
     package_dir={'rule_estimator': 'rule_estimator'},  # the one line where all the magic happens
     package_data={
         'rule_estimator': ['data/*'],
@@ -12,7 +12,7 @@
     long_description='Scikit-learn compatible business rule estimator, with dashboard included',
     license='Apache-2',
     classifiers=["Development Status :: 3 - Alpha"],
-    install_requires=['pandas', 'numpy', 'scikit-learn', 'oyaml', 'python-igraph', 'dash', 'dash-bootstrap-components'],
+    install_requires=['pandas', 'numpy', 'scikit-learn', 'oyaml', 'python-igraph', 'dash>=1.21', 'dash-bootstrap-components'],
     python_requires='>=3.6',
     author='Oege Dijk',
     author_email='[email protected]',