diff --git a/docker-compose.yml b/docker-compose.yml
index 36d6f47..1805e57 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -73,7 +73,7 @@ services:
       S3_RUN_LOG_BUCKET: ${S3_RUN_LOG_BUCKET:-run-log}
       S3_TRASH_BUCKET: ${S3_TRASH_BUCKET:-trash}
       S3_TRASH_RETENTION_DAYS: ${S3_TRASH_RETENTION_DAYS:-30}
-      READINESS_TARGETS: ${MYSQL_HOST:?MYSQL_HOST is required}:${MYSQL_PORT:-3306},${S3_HOST:-s3}:${S3_PORT:-9000},runtime:8000
+      READINESS_TARGETS: ${MYSQL_HOST:?MYSQL_HOST is required}:${MYSQL_PORT:-3306},runtime:8000
     depends_on:
       migrate:
         condition: service_completed_successfully