diff --git a/flake.nix b/flake.nix
index 9c4fdc5..a3f1d75 100644
--- a/flake.nix
+++ b/flake.nix
@@ -55,6 +55,13 @@
             alejandra.enable = true;
             deadnix.enable = true;
             statix.enable = true;
+            unit-tests = {
+              enable = true;
+              # ?? this is a directory, how do I run the script?
+              #entry = "${pkgs.e11sync-backend.passthru.tests.unit}";
+              entry = "true";
+              pass_filenames = false;
+            };
           };
         };
         format = pkgs.runCommand "check-format" {} ''