diff --git a/foursight_core/react/api/auth.py b/foursight_core/react/api/auth.py
index 85804f396..05a383a3b 100644
--- a/foursight_core/react/api/auth.py
+++ b/foursight_core/react/api/auth.py
@@ -40,8 +40,7 @@ def get_redis_handler(self):
             # 2023-09-21: Moved this from __init__ to here;
             # it speeds up provision/deploy from 4dn-cloud-infra.
             try:
-                redis_url = os.environ['REDIS_HOST']
-                if redis_url and ("redis://" in redis_url or "rediss://" in redis_url):
+                if (redis_url := os.environ.get('REDIS_HOST')) and ("redis://" in redis_url or "rediss://" in redis_url):
                     self._redis = RedisBase(create_redis_client(url=redis_url))
             except (redis.exceptions.ConnectionError, redis.exceptions.TimeoutError):
                 PRINT('Cannot connect to Redis')
diff --git a/pyproject.toml b/pyproject.toml
index 7900f8508..f4d226ffc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "foursight-core"
-version = "5.1.0.1b3"  # TODO: To become 5.2.0
+version = "5.1.0.1b4"  # TODO: To become 5.2.0
 description = "Serverless Chalice Application for Monitoring"
 authors = ["4DN-DCIC Team <support@4dnucleome.org>"]
 license = "MIT"