diff --git a/tests/default.nix b/tests/default.nix
index 39353e482..d186ee04d 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -5,8 +5,8 @@ let
   nmt = pkgs.fetchFromGitLab {
     owner = "rycee";
     repo = "nmt";
-    rev = "b6ab61e707ec1ca3839fef42f9960a1179d543c4";
-    sha256 = "097fm1hmsyhy8chf73wwrvafcxny37414fna3haxf0q5fvpv4jfb";
+    rev = "89fb12a2aaa8ec671e22a033162c7738be714305";
+    sha256 = "07yc1jkgw8vhskzk937k9hfba401q8rn4sgj9baw3fkjl9zrbcyf";
   };
 
 in
diff --git a/tests/modules/programs/tmux/not-enabled.nix b/tests/modules/programs/tmux/not-enabled.nix
index d74f30648..b7c675a83 100644
--- a/tests/modules/programs/tmux/not-enabled.nix
+++ b/tests/modules/programs/tmux/not-enabled.nix
@@ -7,7 +7,7 @@ with lib;
     programs.tmux = { enable = false; };
 
     nmt.script = ''
-      assertFileNotExists home-files/.tmux.conf
+      assertPathNotExists home-files/.tmux.conf
     '';
   };
 }