diff --git a/pkgs/wsl-ssh-agent-forward/default.nix b/pkgs/wsl-ssh-agent-forward/default.nix
index d88e0e7..1ca33c2 100644
--- a/pkgs/wsl-ssh-agent-forward/default.nix
+++ b/pkgs/wsl-ssh-agent-forward/default.nix
@@ -5,6 +5,7 @@ stdenv.mkDerivation rec {
   version = "0.1";
   src = ./wsl-ssh-agent-forward.sh;
   nativeBuildInputs = [pkgs.makeWrapper];
+  phases = ["installPhase" ];
   installPhase = ''
   install -Dm755 wsl-ssh-agent-forward.sh $out/bin/wsl-ssh-agent-forward.sh
   wrapProgram $out/bin/wsl-ssh-agent-forward.sh --prefix PATH : $out/bin