diff --git a/flake.nix b/flake.nix
index dccecb1..b925431 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,7 +11,7 @@
   outputs = { self, nixpkgs, flake-utils, poetry2nix }:
     flake-utils.lib.eachDefaultSystem (system:
       let
-        nativeBuildInputs = with pkgs; [ stdenv python3 poetry ];
+        nativeBuildInputs = with pkgs; [ stdenv python3 poetry tesseract ];
         buildInputs = with pkgs; [ ];
 
         # see https://github.com/nix-community/poetry2nix/tree/master#api for more functions and examples.