diff --git a/snuba/settings/settings_self_hosted.py b/snuba/settings/settings_self_hosted.py
index abe207d8fcb..c9ded10bf3c 100644
--- a/snuba/settings/settings_self_hosted.py
+++ b/snuba/settings/settings_self_hosted.py
@@ -7,6 +7,8 @@
 DEBUG = env("DEBUG", "0").lower() in ("1", "true")
 
 DEFAULT_RETENTION_DAYS = int(env("SENTRY_EVENT_RETENTION_DAYS", 90))
+VALID_RETENTION_DAYS = set([int(env("SENTRY_EVENT_RETENTION_DAYS", 90)), 30, 60])
+LOWER_RETENTION_DAYS = min(DEFAULT_RETENTION_DAYS, 30)
 
 REDIS_HOST = env("REDIS_HOST", "127.0.0.1")
 REDIS_PORT = int(env("REDIS_PORT", 6379))