diff --git a/flake.nix b/flake.nix
index 2d861bb..2bc58f6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,7 @@
     packages.${system} = forAllExercises (
       exercise:
         pkgs.writers.writePython3Bin "picoCTF_${exercise}" {
-          #libraries = with pkgs.python3.pkgs; [requests];
+          libraries = with pkgs.python3.pkgs; [cryptography];
         } "${builtins.readFile ./exercises/${exercise}/main.py}"
     );