diff --git a/pr_agent/git_providers/github_provider.py b/pr_agent/git_providers/github_provider.py
index c9abe2b1..634b8694 100644
--- a/pr_agent/git_providers/github_provider.py
+++ b/pr_agent/git_providers/github_provider.py
@@ -405,7 +405,7 @@ class GithubProvider(GitProvider):
                 raise ValueError("GitHub app installation ID is required when using GitHub app deployment")
             auth = AppAuthentication(app_id=app_id, private_key=private_key,
                                      installation_id=self.installation_id)
-            return Github(app_auth=auth)
+            return Github(app_auth=auth, base_url=get_settings().github.base_url)
 
         if deployment_type == 'user':
             try:
@@ -414,7 +414,7 @@ class GithubProvider(GitProvider):
                 raise ValueError(
                     "GitHub token is required when using user deployment. See: "
                     "https://github.com/Codium-ai/pr-agent#method-2-run-from-source") from e
-            return Github(auth=Auth.Token(token))
+            return Github(auth=Auth.Token(token), base_url=get_settings().github.base_url)
 
     def _get_repo(self):
         if hasattr(self, 'repo_obj') and \
diff --git a/pr_agent/settings/configuration.toml b/pr_agent/settings/configuration.toml
index da69ad8e..38e96fd1 100644
--- a/pr_agent/settings/configuration.toml
+++ b/pr_agent/settings/configuration.toml
@@ -79,6 +79,7 @@ extra_instructions = ""
 # The type of deployment to create. Valid values are 'app' or 'user'.
 deployment_type = "user"
 ratelimit_retries = 5
+base_url = "https://api.github.com"
 
 [github_action]
 # auto_review = true    # set as env var in .github/workflows/pr-agent.yaml