diff --git a/flake.nix b/flake.nix
index b54e37f..6194af5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,6 +30,7 @@
               allowBuiltinFetchGit = true;
             };
             cargoBuildFlags = [ "-p" "appa-cosmic" ];
+            cargoTestFlags = [ "-p" "appa-cosmic" ];
             nativeBuildInputs = [ packages.pkg-config ];
             buildInputs = [ packages.libxkbcommon packages.wayland ];
             postInstall = ''