diff --git a/homeassistant/components/recorder/migration.py b/homeassistant/components/recorder/migration.py
index 0e66585d86e..8eef957bc88 100644
--- a/homeassistant/components/recorder/migration.py
+++ b/homeassistant/components/recorder/migration.py
@@ -522,9 +522,11 @@ def _apply_update(instance, session, new_version, old_version):  # noqa: C901
                 )
                 with contextlib.suppress(SQLAlchemyError):
                     connection.execute(
+                        # Using LOCK=EXCLUSIVE to prevent the database from corrupting
+                        # https://github.com/home-assistant/core/issues/56104
                         text(
                             f"ALTER TABLE {table} CONVERT TO "
-                            "CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci"
+                            "CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci LOCK=EXCLUSIVE"
                         )
                     )
     elif new_version == 22: