diff --git a/docker-compose.yml b/docker-compose.yml
index 846bf12556a..672a17f9f01 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -69,6 +69,7 @@ x-sentry-defaults: &sentry_defaults
     SENTRY_EVENT_RETENTION_DAYS:
     SENTRY_MAIL_HOST:
     SENTRY_MAX_EXTERNAL_SOURCEMAP_SIZE:
+    SENTRY_SYSTEM_SECRET_KEY:
     SENTRY_STATSD_ADDR: "${STATSD_ADDR:-}"
   volumes:
     - "sentry-data:/data"