diff --git a/admin/nixpacks.toml b/admin/nixpacks.toml
index dd03b89..1e4b8d6 100644
--- a/admin/nixpacks.toml
+++ b/admin/nixpacks.toml
@@ -1,5 +1,8 @@
 [phases.setup]
-nixPkgs = ["nodePackages.npm", "nodejs_23", "openssl"]
+nixPkgs = ["nodejs_23", "openssl"]
+
+[phases.install]
+cmds = ["npm ci"]
 
 [phases.build]
 cmds = ["npm install", "npx prisma generate", "npm run build"]
diff --git a/nixpacks.toml b/nixpacks.toml
index dd03b89..1e4b8d6 100644
--- a/nixpacks.toml
+++ b/nixpacks.toml
@@ -1,5 +1,8 @@
 [phases.setup]
-nixPkgs = ["nodePackages.npm", "nodejs_23", "openssl"]
+nixPkgs = ["nodejs_23", "openssl"]
+
+[phases.install]
+cmds = ["npm ci"]
 
 [phases.build]
 cmds = ["npm install", "npx prisma generate", "npm run build"]