diff --git a/custom_components/simpleicons/__init__.py b/custom_components/simpleicons/__init__.py
index 58021ae..e5700fa 100644
--- a/custom_components/simpleicons/__init__.py
+++ b/custom_components/simpleicons/__init__.py
@@ -4,40 +4,40 @@
 
 DOMAIN = "simpleicons"
 
-DATA_EXTRA_MODULE_URL = 'frontend_extra_module_url'
-ICONS_URL = '/'+DOMAIN+'/'
-ICON_FILES = {
-    'simpleicons': 'si.js'
-}
+DATA_EXTRA_MODULE_URL = "frontend_extra_module_url"
+ICONS_URL = "/" + DOMAIN + "/"
+ICON_FILES = {"simpleicons": "si.js"}
+
 
 async def async_setup(hass, config):
     hass.http.register_static_path(
         f"/{DOMAIN}/si.js",
         hass.config.path(f"custom_components/{DOMAIN}/data/si.js"),
-        True
+        True,
     )
-    
+
     if DOMAIN not in config:
         return True
-    
+
     hass.async_create_task(
-        hass.config_entries.flow.async_init(
-            DOMAIN, context={"source": SOURCE_IMPORT}
-        )
+        hass.config_entries.flow.async_init(DOMAIN, context={"source": SOURCE_IMPORT})
     )
 
     register_modules(hass)
     return True
 
+
 async def async_setup_entry(hass, config_entry):
     config_entry.add_update_listener(_update_listener)
     register_modules(hass)
     return True
 
+
 async def async_remove_entry(hass, config_entry):
     register_modules(hass)
     return True
 
+
 async def _update_listener(hass, config_entry):
     register_modules(hass)
     return True
@@ -45,10 +45,10 @@ async def _update_listener(hass, config_entry):
 
 def register_modules(hass):
     if DATA_EXTRA_MODULE_URL not in hass.data:
-        hass.data[DATA_EXTRA_MODULE_URL] = set()
+        hass.data[DATA_EXTRA_MODULE_URL] = UrlManager()
     url_set = hass.data[DATA_EXTRA_MODULE_URL]
 
-    for k,v in ICON_FILES.items():
-        url_set.discard(ICONS_URL+v)
-        #if k in modules and modules[k] != False:
-        url_set.add(ICONS_URL+v)
+    for k, v in ICON_FILES.items():
+        url_set.remove(ICONS_URL + v)
+        # if k in modules and modules[k] != False:
+        url_set.add(ICONS_URL + v)
diff --git a/hacs.json b/hacs.json
index 049de4a..4977e07 100644
--- a/hacs.json
+++ b/hacs.json
@@ -1,7 +1,7 @@
 {
     "name": "simpleicons",
     "render_readme": true,
-    "homeassistant": "0.110.0b0",
+    "homeassistant": "2021.5.0b1",
     "zip_release": true,
     "filename": "hass-simpleicons.zip"
-}
+}
\ No newline at end of file