diff --git a/railway.toml b/railway.toml
index 48aa4f9..da49373 100644
--- a/railway.toml
+++ b/railway.toml
@@ -1,8 +1,4 @@
-[build]
-builder = "nixpacks"
-
 [deploy]
-startCommand = "gunicorn --chdir CSTRChemIA main:server --bind 0.0.0.0:$PORT --workers 1 --timeout 120"
 healthcheckPath = "/"
 healthcheckTimeout = 60
 restartPolicyType = "on_failure"