diff --git a/default.nix b/default.nix
index ed6ddd8..89e5d3e 100644
--- a/default.nix
+++ b/default.nix
@@ -33,7 +33,7 @@ let
     src = builtins.filterSource sieve ./.;
 
     format = "other";
-    propagatedBuildInputs = with pkgs.python3Packages; [ numpy matplotlib ];
+    propagatedBuildInputs = with pkgs.python3Packages; [ numpy scipy matplotlib ];
     makeFlags = [ "PREFIX=$(out)" ];
 
     dontConfigure = true;