diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index 40ebee220bc..f950ca3441d 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -84,23 +84,29 @@ _LOGGER = logging.getLogger(__name__)
 
 CONFIG_SCHEMA = vol.Schema(
     {
-        DOMAIN: vol.Schema(
-            {
-                vol.Optional(CONF_FRONTEND_REPO): cv.isdir,
-                vol.Optional(CONF_THEMES): vol.Schema(
-                    {cv.string: {cv.string: cv.string}}
-                ),
-                vol.Optional(CONF_EXTRA_HTML_URL): vol.All(cv.ensure_list, [cv.string]),
-                vol.Optional(CONF_EXTRA_MODULE_URL): vol.All(
-                    cv.ensure_list, [cv.string]
-                ),
-                vol.Optional(CONF_EXTRA_JS_URL_ES5): vol.All(
-                    cv.ensure_list, [cv.string]
-                ),
-                # We no longer use these options.
-                vol.Optional(CONF_EXTRA_HTML_URL_ES5): cv.match_all,
-                vol.Optional(CONF_JS_VERSION): cv.match_all,
-            }
+        DOMAIN: vol.All(
+            cv.deprecated(CONF_EXTRA_HTML_URL, invalidation_version="0.115"),
+            cv.deprecated(CONF_EXTRA_HTML_URL_ES5, invalidation_version="0.115"),
+            vol.Schema(
+                {
+                    vol.Optional(CONF_FRONTEND_REPO): cv.isdir,
+                    vol.Optional(CONF_THEMES): vol.Schema(
+                        {cv.string: {cv.string: cv.string}}
+                    ),
+                    vol.Optional(CONF_EXTRA_HTML_URL): vol.All(
+                        cv.ensure_list, [cv.string]
+                    ),
+                    vol.Optional(CONF_EXTRA_MODULE_URL): vol.All(
+                        cv.ensure_list, [cv.string]
+                    ),
+                    vol.Optional(CONF_EXTRA_JS_URL_ES5): vol.All(
+                        cv.ensure_list, [cv.string]
+                    ),
+                    # We no longer use these options.
+                    vol.Optional(CONF_EXTRA_HTML_URL_ES5): cv.match_all,
+                    vol.Optional(CONF_JS_VERSION): cv.match_all,
+                },
+            ),
         )
     },
     extra=vol.ALLOW_EXTRA,
diff --git a/homeassistant/components/panel_custom/__init__.py b/homeassistant/components/panel_custom/__init__.py
index 6b8079f577f..2cdcb8d37c4 100644
--- a/homeassistant/components/panel_custom/__init__.py
+++ b/homeassistant/components/panel_custom/__init__.py
@@ -50,6 +50,7 @@ CONFIG_SCHEMA = vol.Schema(
             cv.ensure_list,
             [
                 vol.All(
+                    cv.deprecated(CONF_WEBCOMPONENT_PATH, invalidation_version="0.115"),
                     vol.Schema(
                         {
                             vol.Required(CONF_COMPONENT_NAME): cv.string,