diff --git a/src/azure-cli/azure/cli/command_modules/appservice/custom.py b/src/azure-cli/azure/cli/command_modules/appservice/custom.py
index f1da24aa73a..727c8ac2423 100644
--- a/src/azure-cli/azure/cli/command_modules/appservice/custom.py
+++ b/src/azure-cli/azure/cli/command_modules/appservice/custom.py
@@ -4964,6 +4964,7 @@ def delete_function_key(cmd, resource_group_name, name, key_name, function_name=
 
 def add_github_actions(cmd, resource_group, name, repo, runtime=None, token=None, slot=None,  # pylint: disable=too-many-statements,too-many-branches
                        branch='master', login_with_github=False, force=False):
+    runtime = _StackRuntimeHelper(cmd).remove_delimiters(runtime)  # normalize "runtime:version"
     if not token and not login_with_github:
         raise_missing_token_suggestion()
     elif not token:
diff --git a/src/azure-cli/azure/cli/command_modules/appservice/tests/latest/test_webapp_commands_thru_mock.py b/src/azure-cli/azure/cli/command_modules/appservice/tests/latest/test_webapp_commands_thru_mock.py
index cbaa0c43117..0d9db512444 100644
--- a/src/azure-cli/azure/cli/command_modules/appservice/tests/latest/test_webapp_commands_thru_mock.py
+++ b/src/azure-cli/azure/cli/command_modules/appservice/tests/latest/test_webapp_commands_thru_mock.py
@@ -25,7 +25,8 @@
                                                          restore_deleted_webapp,
                                                          list_snapshots,
                                                          restore_snapshot,
-                                                         create_managed_ssl_cert)
+                                                         create_managed_ssl_cert,
+                                                         add_github_actions)
 
 # pylint: disable=line-too-long
 from azure.cli.core.profiles import ResourceType
@@ -47,6 +48,30 @@ class TestWebappMocked(unittest.TestCase):
     def setUp(self):
         self.client = WebSiteManagementClient(mock.MagicMock(), '123455678')
 
+    @mock.patch('azure.cli.command_modules.appservice.custom._update_site_source_control_properties_for_gh_action')
+    @mock.patch('azure.cli.command_modules.appservice.custom._add_publish_profile_to_github')
+    @mock.patch('azure.cli.command_modules.appservice.custom.prompt_y_n')
+    @mock.patch('azure.cli.command_modules.appservice.custom._get_app_runtime_info')
+    @mock.patch('github.Github')
+    @mock.patch('azure.cli.command_modules.appservice.custom.parse_resource_id')
+    @mock.patch('azure.cli.command_modules.appservice.custom.get_site_availability')
+    @mock.patch('azure.cli.command_modules.appservice.custom.web_client_factory')
+    @mock.patch('azure.cli.command_modules.appservice.custom.get_app_details')
+    def test_webapp_github_actions_add(self, get_app_details_mock, web_client_factory_mock, site_availability_mock,  *args):
+        runtime = "python:3.9"
+        rg = "group"
+        is_linux = True
+        cmd = _get_test_cmd()
+        get_app_details_mock.return_value = mock.Mock()
+        get_app_details_mock.return_value.resource_group = rg
+        web_client_factory_mock.return_value.app_service_plans.get.return_value.reserved = is_linux
+        site_availability_mock.return_value.name_available = False
+
+        with mock.patch('azure.cli.command_modules.appservice.custom._runtime_supports_github_actions', autospec=True) as m:
+            add_github_actions(cmd, rg, "name", "repo", runtime, "token")
+            m.assert_called_with(cmd, runtime.replace(":", "|"), is_linux)
+
+
     @mock.patch('azure.cli.command_modules.appservice.custom.web_client_factory', autospec=True)
     def test_set_deployment_user_creds(self, client_factory_mock):
         class MockClient: