diff --git a/microsound/wavesets_k-means_clustering/shell.nix b/microsound/wavesets_k-means_clustering/shell.nix
index 7d953d6..d3088ea 100644
--- a/microsound/wavesets_k-means_clustering/shell.nix
+++ b/microsound/wavesets_k-means_clustering/shell.nix
@@ -2,6 +2,7 @@
 
 pkgs.mkShell {
 	buildInputs = [
+		pkgs.python313
 		pkgs.python313Packages.numpy
 		pkgs.python313Packages.soundfile
 		pkgs.python313Packages.scikit-learn