diff --git a/flake.nix b/flake.nix
index d686d39f3..43e1cc7b0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -188,7 +188,7 @@ rec {
               cargo doc --workspace
 
               pushd nemo-python
-                pycodestyle .
+                pycodestyle . --max-line-length 90
                 VENV="$(mktemp -d)"
                 python3 -m venv "''${VENV}"
                 # shellcheck disable=SC1091