diff --git a/flake.nix b/flake.nix
index 9b316f3..cfa89f9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,8 @@
 
   outputs = inputs@{ self, nixpkgs, ... }:
     let
-      financierVersion = "1.7.3";
+      financierVersion = (builtins.fromJSON
+        (builtins.readFile "${inputs.financier}/package.json")).version;
       nodeVersion = "12";
 
       overlay = final: prev: {