diff --git a/supervisor/store/validate.py b/supervisor/store/validate.py
index 0106c72aa..e21982ead 100644
--- a/supervisor/store/validate.py
+++ b/supervisor/store/validate.py
@@ -8,11 +8,13 @@ from .const import StoreType
 
 URL_COMMUNITY_ADDONS = "https://github.com/hassio-addons/repository"
 URL_ESPHOME = "https://github.com/esphome/home-assistant-addon"
+URL_MUSIC_ASSISTANT = "https://github.com/music-assistant/home-assistant-addon"
 BUILTIN_REPOSITORIES = {
     StoreType.CORE,
     StoreType.LOCAL,
     URL_COMMUNITY_ADDONS,
     URL_ESPHOME,
+    URL_MUSIC_ASSISTANT,
 }
 
 # pylint: disable=no-value-for-parameter
diff --git a/tests/fixtures/addons/git/d5369777/repository.json b/tests/fixtures/addons/git/d5369777/repository.json
new file mode 100644
index 000000000..8960c23eb
--- /dev/null
+++ b/tests/fixtures/addons/git/d5369777/repository.json
@@ -0,0 +1,5 @@
+{
+    "name": "Music Assistant",
+    "url": "https://github.com/music-assistant/core",
+    "maintainer": "Music Assistant <marcelveldt@users.noreply.github.com>"
+  }
\ No newline at end of file
diff --git a/tests/store/test_custom_repository.py b/tests/store/test_custom_repository.py
index 335692825..1f3dc40a1 100644
--- a/tests/store/test_custom_repository.py
+++ b/tests/store/test_custom_repository.py
@@ -163,6 +163,7 @@ async def test_preinstall_valid_repository(
         assert store_manager.get("local").validate()
         assert store_manager.get("a0d7b954").validate()
         assert store_manager.get("5c53de3b").validate()
+        assert store_manager.get("d5369777").validate()
 
 
 @pytest.mark.parametrize("use_update", [True, False])
diff --git a/tests/store/test_store_manager.py b/tests/store/test_store_manager.py
index 233f0ecb3..e2b1831fc 100644
--- a/tests/store/test_store_manager.py
+++ b/tests/store/test_store_manager.py
@@ -39,11 +39,11 @@ async def test_default_load(coresys: CoreSys):
     ):
         await store_manager.load()
 
-    assert len(store_manager.all) == 4
+    assert len(store_manager.all) == 5
     assert isinstance(store_manager.get("core"), Repository)
     assert isinstance(store_manager.get("local"), Repository)
 
-    assert len(store_manager.repository_urls) == 2
+    assert len(store_manager.repository_urls) == 3
     assert (
         "https://github.com/hassio-addons/repository" in store_manager.repository_urls
     )
@@ -51,6 +51,11 @@ async def test_default_load(coresys: CoreSys):
         "https://github.com/esphome/home-assistant-addon"
         in store_manager.repository_urls
     )
+    assert (
+        "https://github.com/music-assistant/home-assistant-addon"
+        in store_manager.repository_urls
+    )
+    # NOTE: When adding new stores, make sure to add it to tests/fixtures/addons/git/
     assert refresh_cache_calls == {"local_ssh", "local_example", "core_samba"}
 
 
@@ -77,11 +82,11 @@ async def test_load_with_custom_repository(coresys: CoreSys):
     ):
         await store_manager.load()
 
-    assert len(store_manager.all) == 5
+    assert len(store_manager.all) == 6
     assert isinstance(store_manager.get("core"), Repository)
     assert isinstance(store_manager.get("local"), Repository)
 
-    assert len(store_manager.repository_urls) == 3
+    assert len(store_manager.repository_urls) == 4
     assert (
         "https://github.com/hassio-addons/repository" in store_manager.repository_urls
     )
@@ -89,6 +94,10 @@ async def test_load_with_custom_repository(coresys: CoreSys):
         "https://github.com/esphome/home-assistant-addon"
         in store_manager.repository_urls
     )
+    assert (
+        "https://github.com/music-assistant/home-assistant-addon"
+        in store_manager.repository_urls
+    )
     assert "http://example.com" in store_manager.repository_urls
 
 
@@ -105,11 +114,11 @@ async def test_load_from_core_config(coresys: CoreSys):
     ), patch("pathlib.Path.exists", return_value=True):
         await coresys.store.load()
 
-    assert len(coresys.store.all) == 5
+    assert len(coresys.store.all) == 6
     assert isinstance(coresys.store.get("core"), Repository)
     assert isinstance(coresys.store.get("local"), Repository)
 
-    assert len(coresys.store.repository_urls) == 3
+    assert len(coresys.store.repository_urls) == 4
     assert (
         "https://github.com/hassio-addons/repository" in coresys.store.repository_urls
     )
@@ -117,6 +126,10 @@ async def test_load_from_core_config(coresys: CoreSys):
         "https://github.com/esphome/home-assistant-addon"
         in coresys.store.repository_urls
     )
+    assert (
+        "https://github.com/music-assistant/home-assistant-addon"
+        in coresys.store.repository_urls
+    )
     assert "http://example.com" in coresys.store.repository_urls
 
     assert coresys.config.addons_repositories == []
@@ -243,12 +256,12 @@ async def test_install_unavailable_addon(
 async def test_reload(coresys: CoreSys):
     """Test store reload."""
     await coresys.store.load()
-    assert len(coresys.store.all) == 4
+    assert len(coresys.store.all) == 5
 
     with patch.object(GitRepo, "pull") as git_pull:
         await coresys.store.reload()
 
-        assert git_pull.call_count == 3
+        assert git_pull.call_count == 4
 
 
 async def test_addon_version_timestamp(coresys: CoreSys, install_addon_example: Addon):
diff --git a/tests/store/test_validate.py b/tests/store/test_validate.py
index b780d839d..5a2b25032 100644
--- a/tests/store/test_validate.py
+++ b/tests/store/test_validate.py
@@ -49,12 +49,13 @@ async def test_repository_validate(repo_list: list[str], valid: bool):
     """Test repository list validate."""
     if valid:
         processed = repositories(repo_list)
-        assert len(processed) == 4
+        assert len(processed) == 5
         assert set(repositories(repo_list)) == {
             "core",
             "local",
             "https://github.com/hassio-addons/repository",
             "https://github.com/esphome/home-assistant-addon",
+            "https://github.com/music-assistant/home-assistant-addon",
         }
     else:
         with pytest.raises(Invalid):