diff --git a/nixpacks.toml b/nixpacks.toml
index 9b1e186..ccc6f79 100644
--- a/nixpacks.toml
+++ b/nixpacks.toml
@@ -1,2 +1,5 @@
 [variables]
 NIXPACKS_NODE_VERSION = '22'
+
+[phases.setup]
+nixPkgsArchive = 'e4f44407a7a9a5561cd6b589a6d27e7a8f91a720'