diff --git a/homeassistant/components/onewire/sensor.py b/homeassistant/components/onewire/sensor.py
index 3b7eeb50c29..bce17dbf3cb 100644
--- a/homeassistant/components/onewire/sensor.py
+++ b/homeassistant/components/onewire/sensor.py
@@ -233,6 +233,13 @@ def get_entities(config):
         # This part of the implementation does not conform to policy regarding 3rd-party libraries, and will not longer be updated.
         # https://developers.home-assistant.io/docs/creating_platform_code_review/#5-communication-with-devicesservices
         _LOGGER.debug("Initializing using OWFS %s", base_dir)
+        _LOGGER.warning(
+            "The OWFS implementation of 1-Wire sensors is deprecated, "
+            "and should be migrated to OWServer (on localhost:4304). "
+            "If migration to OWServer is not feasible on your installation, "
+            "please raise an issue at https://github.com/home-assistant/core/issues/new"
+            "?title=Unable%20to%20migrate%20onewire%20from%20OWFS%20to%20OWServer",
+        )
         for family_file_path in glob(os.path.join(base_dir, "*", "family")):
             with open(family_file_path) as family_file:
                 family = family_file.read()