diff --git a/README.md b/README.md
index 0fc970e..0d958c2 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,9 @@
 ## Metrics Model 
 Metrics Model makes metrics combine  metrics together, you could find us [here](https://github.com/chaoss/wg-metrics-models) 
 
+### Requirements
+- Python >= 3.8 (required by grimoire_elk dependency)
+
 ### Please create json file as following way:
     
     {
diff --git a/run.py b/run.py
index 748550d..c88366c 100644
--- a/run.py
+++ b/run.py
@@ -27,7 +27,7 @@
                  'pr_index', 'issue_comments_index', 'pr_comments_index', 'git_index', 'contributors_index', 'contributors_enriched_index',
                  'from_date', 'end_date', 'repo_index', 'event_index', 'company', 'stargazer_index',
                  'fork_index', 'level', 'community', 'contributors_org_index', 'organizations_index', 'bots_index']:
-      kwargs[item] = None if params[item] and params[item] == 'None' else params[item]
+      kwargs[item] = None if item not in params or params[item] == 'None' else params[item]
    contributor = ContributorDevOrgRepo(**kwargs)
    contributor.run(elastic_url)
 
@@ -35,21 +35,21 @@
    for item in ['issue_index', 'pr_index', 'repo_index', 'json_file', 'git_index',  'from_date', 'end_date',
                 'out_index', 'community', 'level', 'release_index', 'issue_comments_index', 'pr_comments_index',
                 'contributors_index']:
-       kwargs[item] = None if params[item] and params[item] == 'None' else params[item]
+       kwargs[item] = None if item not in params or params[item] == 'None' else params[item]
    model_activity = ActivityMetricsModel(**kwargs)
    model_activity.metrics_model_metrics(elastic_url)
 
    kwargs = {}
    for item in ['issue_index', 'pr_index', 'json_file', 'git_index', 'from_date', 'end_date', 'out_index', 'community',
                 'level', 'contributors_index']:
-       kwargs[item] = None if params[item] and params[item] == 'None' else params[item]
+       kwargs[item] = None if item not in params or params[item] == 'None' else params[item]
    model_community = CommunitySupportMetricsModel(**kwargs)
    model_community.metrics_model_metrics(elastic_url)
 
    kwargs = {}
    for item in ['issue_index', 'pr_index', 'json_file', 'git_index', 'from_date', 'end_date', 'out_index',
                'community', 'level', 'company', 'pr_comments_index', 'contributors_index']:
-      kwargs[item] = None if params[item] and params[item] == 'None' else params[item]
+      kwargs[item] = None if item not in params or params[item] == 'None' else params[item]
    model_code = CodeQualityGuaranteeMetricsModel(**kwargs)
    model_code.metrics_model_metrics(elastic_url)
 
@@ -57,7 +57,7 @@
    for item in ['issue_index', 'pr_index', 'repo_index', 'json_file', 'git_index',  'from_date', 'end_date',
                 'out_index', 'community', 'level', 'company', 'issue_comments_index', 'pr_comments_index',
                 'contributors_index']:
-       kwargs[item] = None if params[item] and params[item] == 'None' else params[item]
+       kwargs[item] = None if item not in params or params[item] == 'None' else params[item]
    model_organizations = OrganizationsActivityMetricsModel(**kwargs)
    model_organizations.metrics_model_metrics(elastic_url)
 
diff --git a/setup.py b/setup.py
index 96aa8ab..f51dcef 100644
--- a/setup.py
+++ b/setup.py
@@ -19,8 +19,10 @@
           'Topic :: Software Development',
           'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
           'Programming Language :: Python :: 3',
-          'Programming Language :: Python :: 3.4',
-          'Programming Language :: Python :: 3.5'],
+          'Programming Language :: Python :: 3.8',
+          'Programming Language :: Python :: 3.9',
+          'Programming Language :: Python :: 3.10',
+          'Programming Language :: Python :: 3.11'],
       keywords="Metric Model",
       packages=find_packages(),
       package_data={
@@ -28,7 +30,7 @@
           'compass_metrics': ['resources/*'],
           'compass_contributor': ['conf_utils/*']
       },
-      python_requires='>=3.4',
+      python_requires='>=3.8',
       setup_requires=['wheel'],
       zip_safe=False
       )