diff --git a/requirements.txt b/requirements.txt
index 6b88e16..016acb5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ MarkupSafe==1.1.1
 more-itertools==7.2.0
 packaging==19.1
 pkginfo==1.5.0.1
-pluggy==0.12.0
+pluggy==0.13.1
 py==1.8.0
 pycodestyle==2.5.0
 pyflakes==2.1.1
diff --git a/tests/test_circup.py b/tests/test_circup.py
index e940636..d1deff7 100644
--- a/tests/test_circup.py
+++ b/tests/test_circup.py
@@ -352,7 +352,7 @@ def test_find_modules():
     ), mock.patch(
         "circup.os.path.isfile", return_value=True
     ):
-        result = circup.find_modules()
+        result = circup.find_modules("")
     assert len(result) == 1
     assert result[0].name == "adafruit_74hc595"
 
@@ -367,7 +367,7 @@ def test_find_modules_goes_bang():
     ), mock.patch("circup.click") as mock_click, mock.patch(
         "circup.sys.exit"
     ) as mock_exit:
-        circup.find_modules()
+        circup.find_modules("")
         assert mock_click.echo.call_count == 1
         mock_exit.assert_called_once_with(1)
 
@@ -405,11 +405,11 @@ def test_get_device_versions():
     """
     Ensure get_modules is called with the path for the attached device.
     """
-    with mock.patch("circup.find_device", return_value="CIRCUITPYTHON"), mock.patch(
+    with mock.patch(
         "circup.get_modules", return_value="ok"
     ) as mock_gm:
-        assert circup.get_device_versions() == "ok"
-        mock_gm.assert_called_once_with(os.path.join("CIRCUITPYTHON", "lib"))
+        assert circup.get_device_versions("TESTDIR") == "ok"
+        mock_gm.assert_called_once_with(os.path.join("TESTDIR", "lib"))
 
 
 def test_get_modules_empty_path():