diff --git a/flake.nix b/flake.nix
index dd3fc23c..c9dd098e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,7 +73,7 @@
           packages.default = self.packages.${system}.nextpnr;
 
           devShell = pkgs.mkShell {
-            buildInputs = [ self.packages.${system}.default ];
+            inputsFrom = [ self.packages.${system}.default ];
 
             shellHook = ''
              export TRELLIS_INSTALL_PREFIX=${pkgs.trellis}