diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index fa9c826..a35304c 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -39,6 +39,8 @@ services:
       - BASE_URL=${BASE_URL:-https://golf.example.com}
       - RATE_LIMIT_ENABLED=true
       - INVITE_ONLY=true
+      - DAILY_OPEN_SIGNUPS=${DAILY_OPEN_SIGNUPS:-0}
+      - DAILY_SIGNUPS_PER_IP=${DAILY_SIGNUPS_PER_IP:-3}
       - BOOTSTRAP_ADMIN_USERNAME=${BOOTSTRAP_ADMIN_USERNAME:-}
       - BOOTSTRAP_ADMIN_PASSWORD=${BOOTSTRAP_ADMIN_PASSWORD:-}
       - MATCHMAKING_ENABLED=true
diff --git a/docker-compose.staging.yml b/docker-compose.staging.yml
index e2c09a9..233d81d 100644
--- a/docker-compose.staging.yml
+++ b/docker-compose.staging.yml
@@ -29,6 +29,8 @@ services:
       - BASE_URL=${BASE_URL:-https://staging.golfcards.club}
       - RATE_LIMIT_ENABLED=false
       - INVITE_ONLY=true
+      - DAILY_OPEN_SIGNUPS=${DAILY_OPEN_SIGNUPS:-0}
+      - DAILY_SIGNUPS_PER_IP=${DAILY_SIGNUPS_PER_IP:-3}
       - BOOTSTRAP_ADMIN_USERNAME=${BOOTSTRAP_ADMIN_USERNAME:-}
       - BOOTSTRAP_ADMIN_PASSWORD=${BOOTSTRAP_ADMIN_PASSWORD:-}
       - MATCHMAKING_ENABLED=true