diff --git a/superset/async_events/cache_backend.py b/superset/async_events/cache_backend.py
index 15887e47ab1..9158e2d119a 100644
--- a/superset/async_events/cache_backend.py
+++ b/superset/async_events/cache_backend.py
@@ -95,6 +95,11 @@ class RedisCacheBackend(RedisCache):
             "ssl_cert_reqs": config.get("CACHE_REDIS_SSL_CERT_REQS", "required"),
             "ssl_ca_certs": config.get("CACHE_REDIS_SSL_CA_CERTS", None),
         }
+
+        # Handle username separately as it's optional for Redis authentication.
+        if configured_username := config.get("CACHE_REDIS_USER"):
+            kwargs["username"] = configured_username
+
         return cls(**kwargs)