diff --git a/.travis.yml b/.travis.yml
index 3e5e73d06..f9e506a56 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,4 +10,4 @@ before_script:
 script:
   - ./format -c
   - nix-shell . -A install
-  - nix-shell --pure tests -A run.all
+  - nix-shell --pure --max-jobs 10 tests -A run.all
diff --git a/tests/default.nix b/tests/default.nix
index 493672d71..8913859da 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -7,8 +7,8 @@ let
   nmt = pkgs.fetchFromGitLab {
     owner = "rycee";
     repo = "nmt";
-    rev = "4174e11107ba808b3001ede2f9f245481dfdfb2e";
-    sha256 = "0vzdh7211dxmd4c3371l5b2v5i3b8rip2axk8l5xqlwddp3jiy5n";
+    rev = "ae9ce0033dbd28b4774142a67369f41c11753555";
+    sha256 = "1m5jqhflykya5h6s69ps6r70ffbsr6qkxdq1miqa68msshl21f9y";
   };
 
   modules = import ../modules/modules.nix {
diff --git a/tests/modules/services/polybar/basic-configuration.nix b/tests/modules/services/polybar/basic-configuration.nix
index a50bcdf53..a8886dab6 100644
--- a/tests/modules/services/polybar/basic-configuration.nix
+++ b/tests/modules/services/polybar/basic-configuration.nix
@@ -34,7 +34,7 @@
     };
 
     nmt.script = ''
-      local serviceFile=home-files/.config/systemd/user/polybar.service
+      serviceFile=home-files/.config/systemd/user/polybar.service
 
       assertFileExists $serviceFile
       assertFileRegex $serviceFile 'X-Restart-Triggers=.*polybar\.conf'
diff --git a/tests/modules/services/sxhkd/configuration.nix b/tests/modules/services/sxhkd/configuration.nix
index 3c9d8b52b..03206a8d5 100644
--- a/tests/modules/services/sxhkd/configuration.nix
+++ b/tests/modules/services/sxhkd/configuration.nix
@@ -23,7 +23,7 @@
       [ (self: super: { sxhkd = pkgs.writeScriptBin "dummy-sxhkd" ""; }) ];
 
     nmt.script = ''
-      local sxhkdrc=home-files/.config/sxhkd/sxhkdrc
+      sxhkdrc=home-files/.config/sxhkd/sxhkdrc
 
       assertFileExists $sxhkdrc
 
diff --git a/tests/modules/services/sxhkd/service.nix b/tests/modules/services/sxhkd/service.nix
index 46ce259a7..9b4fd70cc 100644
--- a/tests/modules/services/sxhkd/service.nix
+++ b/tests/modules/services/sxhkd/service.nix
@@ -7,7 +7,7 @@
     };
 
     nmt.script = ''
-      local serviceFile=home-files/.config/systemd/user/sxhkd.service
+      serviceFile=home-files/.config/systemd/user/sxhkd.service
 
       assertFileExists $serviceFile
 
diff --git a/tests/modules/systemd/services.nix b/tests/modules/systemd/services.nix
index f1f7a42bb..ea9b2b4fb 100644
--- a/tests/modules/systemd/services.nix
+++ b/tests/modules/systemd/services.nix
@@ -15,7 +15,7 @@ with lib;
     };
 
     nmt.script = ''
-      local serviceFile=home-files/.config/systemd/user/test-service@.service
+      serviceFile=home-files/.config/systemd/user/test-service@.service
       assertFileExists $serviceFile
       assertFileContent $serviceFile ${./services-expected.conf}
     '';
diff --git a/tests/modules/systemd/session-variables.nix b/tests/modules/systemd/session-variables.nix
index 7cfb4a6c7..b725827ce 100644
--- a/tests/modules/systemd/session-variables.nix
+++ b/tests/modules/systemd/session-variables.nix
@@ -10,7 +10,7 @@ with lib;
     };
 
     nmt.script = ''
-      local envFile=home-files/.config/environment.d/10-home-manager.conf
+      envFile=home-files/.config/environment.d/10-home-manager.conf
       assertFileExists $envFile
       assertFileContent $envFile ${./session-variables-expected.conf}
     '';
diff --git a/tests/modules/systemd/timers.nix b/tests/modules/systemd/timers.nix
index eaa43f176..1c0e27222 100644
--- a/tests/modules/systemd/timers.nix
+++ b/tests/modules/systemd/timers.nix
@@ -13,8 +13,8 @@ with lib;
     };
 
     nmt.script = ''
-      local unitDir=home-files/.config/systemd/user
-      local timerFile=$unitDir/test-timer.timer
+      unitDir=home-files/.config/systemd/user
+      timerFile=$unitDir/test-timer.timer
 
       assertFileExists $timerFile
       assertFileContent $timerFile ${./timers-expected.conf}