diff --git a/symfony/mercure-bundle/0.3/manifest.json b/symfony/mercure-bundle/0.3/manifest.json
index 9df7a458..1d1895a0 100644
--- a/symfony/mercure-bundle/0.3/manifest.json
+++ b/symfony/mercure-bundle/0.3/manifest.json
@@ -28,7 +28,7 @@
                 "    MERCURE_EXTRA_DIRECTIVES: |",
                 "      cors_origins http://127.0.0.1:8000",
                 "  # Comment the following line to disable the development mode",
-                "  command: /usr/bin/caddy run -config /etc/caddy/Caddyfile.dev",
+                "  command: /usr/bin/caddy run --config /etc/caddy/Caddyfile.dev",
                 "  volumes:",
                 "    - mercure_data:/data",
                 "    - mercure_config:/config"