diff --git a/homeassistant/helpers/system_info.py b/homeassistant/helpers/system_info.py
index ec8badaddc3..69e03904caa 100644
--- a/homeassistant/helpers/system_info.py
+++ b/homeassistant/helpers/system_info.py
@@ -15,9 +15,12 @@ from homeassistant.loader import bind_hass
 from homeassistant.util.package import is_docker_env, is_virtual_env
 
 from .importlib import async_import_module
+from .singleton import singleton
 
 _LOGGER = logging.getLogger(__name__)
 
+_DATA_MAC_VER = "system_info_mac_ver"
+
 
 @cache
 def is_official_image() -> bool:
@@ -25,6 +28,12 @@ def is_official_image() -> bool:
     return os.path.isfile("/OFFICIAL_IMAGE")
 
 
+@singleton(_DATA_MAC_VER)
+async def async_get_mac_ver(hass: HomeAssistant) -> str:
+    """Return the macOS version."""
+    return (await hass.async_add_executor_job(platform.mac_ver))[0]
+
+
 # Cache the result of getuser() because it can call getpwuid() which
 # can do blocking I/O to look up the username in /etc/passwd.
 cached_get_user = cache(getuser)
@@ -65,7 +74,7 @@ async def async_get_system_info(hass: HomeAssistant) -> dict[str, Any]:
         info_object["user"] = None
 
     if platform.system() == "Darwin":
-        info_object["os_version"] = platform.mac_ver()[0]
+        info_object["os_version"] = await async_get_mac_ver(hass)
     elif platform.system() == "Linux":
         info_object["docker"] = is_docker_env()