diff --git a/hassio/bootstrap.py b/hassio/bootstrap.py
index 9ba8af4c2..8b37525b7 100644
--- a/hassio/bootstrap.py
+++ b/hassio/bootstrap.py
@@ -120,7 +120,8 @@ def initialize_system_data(coresys):
         _LOGGER.info("Create Hass.io Apparmor folder %s", config.path_apparmor)
         config.path_apparmor.mkdir()
 
-    return config
+    # Update log level
+    coresys.config.modify_log_level()
 
 
 def migrate_system_env(coresys):
diff --git a/hassio/config.py b/hassio/config.py
index 4fc4b819d..ca386a7b8 100644
--- a/hassio/config.py
+++ b/hassio/config.py
@@ -91,6 +91,12 @@ class CoreConfig(JsonConfig):
     def logging(self, value: str):
         """Set system log level."""
         self._data[ATTR_LOGGING] = value
+        self.modify_log_level()
+
+    def modify_log_level(self) -> None:
+        """Change log level."""
+        lvl = getattr(logging, self.logging.upper())
+        logging.basicConfig(level=lvl)
 
     @property
     def last_boot(self):