diff --git a/tradero/__init__.py b/tradero/__init__.py
index 9cece86..02fc699 100644
--- a/tradero/__init__.py
+++ b/tradero/__init__.py
@@ -3,6 +3,11 @@
 
 from .celery import app as celery_app
 
-cache.delete(settings.SYMBOLS_UPDATE_ALL_INDICATORS_KEY)
+try:
+    cache.delete(settings.SYMBOLS_UPDATE_ALL_INDICATORS_KEY)
+except Exception:  # pragma: no cover
+    # Prevent from failing if Redis is not available (for building in ReadTheDocs)
+    pass
+
 
 __all__ = ("celery_app",)