diff --git a/docker-compose.quickstart.yml b/docker-compose.quickstart.yml
index f41c7388..f44549b4 100644
--- a/docker-compose.quickstart.yml
+++ b/docker-compose.quickstart.yml
@@ -12,6 +12,7 @@ services:
       ANTHROPIC_API_KEY: "${ANTHROPIC_API_KEY:-}"
       PAPERCLIP_DEPLOYMENT_MODE: "authenticated"
       PAPERCLIP_DEPLOYMENT_EXPOSURE: "private"
+      PAPERCLIP_ALLOWED_HOSTNAMES: "${PAPERCLIP_ALLOWED_HOSTNAMES:-localhost}"
       BETTER_AUTH_SECRET: "${BETTER_AUTH_SECRET:-dev-insecure-change-me}"
     volumes:
       - "${PAPERCLIP_DATA_DIR:-./data/docker-paperclip}:/paperclip"
diff --git a/docker-compose.yml b/docker-compose.yml
index 3de17a57..969d620b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -25,6 +25,7 @@ services:
       SERVE_UI: "true"
       PAPERCLIP_DEPLOYMENT_MODE: "authenticated"
       PAPERCLIP_DEPLOYMENT_EXPOSURE: "private"
+      PAPERCLIP_ALLOWED_HOSTNAMES: "${PAPERCLIP_ALLOWED_HOSTNAMES:-localhost}"
       BETTER_AUTH_SECRET: "${BETTER_AUTH_SECRET:-dev-insecure-change-me}"      
     depends_on:
       db: