diff --git a/roles/dev.nix b/roles/dev.nix
index d046695..c1cc8ee 100644
--- a/roles/dev.nix
+++ b/roles/dev.nix
@@ -16,6 +16,7 @@ in {
 
     nodePackages.pyright
     (python39.withPackages(python-packages: with python-packages; [
+      black
       pyyaml
       requests
     ]))