diff --git a/gfxlcd/tests/test_ili9325.py b/gfxlcd/tests/test_ili9325.py
index 02060ad..f9a2249 100644
--- a/gfxlcd/tests/test_ili9325.py
+++ b/gfxlcd/tests/test_ili9325.py
@@ -2,6 +2,18 @@ import sys
 sys.path.append("../../")
 from gfxlcd.driver.ili9325.gpio import GPIO
 from gfxlcd.driver.ili9325.ili9325 import ILI9325
+from unittest.mock import patch, MagicMock
+
+MockRPi = MagicMock()
+MockSpidev = MagicMock()
+modules = {
+    "RPi": MockRPi,
+    "RPi.GPIO": MockRPi.GPIO,
+    "spidev": MockSpidev
+}
+
+patcher = patch.dict("sys.modules", modules)
+patcher.start()
 
 
 class TestILI9325Drawing(object):
@@ -10,3 +22,6 @@ class TestILI9325Drawing(object):
         drv.pins['LED'] = 6
         drv.pins['CS'] = 18
         ILI9325(240, 320, drv)
+
+
+
diff --git a/gfxlcd/tests/test_ili9486.py b/gfxlcd/tests/test_ili9486.py
index 2e2481a..9b0b2f0 100644
--- a/gfxlcd/tests/test_ili9486.py
+++ b/gfxlcd/tests/test_ili9486.py
@@ -2,6 +2,18 @@ import sys
 sys.path.append("../../")
 from gfxlcd.driver.ili9486.spi import SPI
 from gfxlcd.driver.ili9486.ili9486 import ILI9486
+from unittest.mock import patch, MagicMock
+
+MockRPi = MagicMock()
+MockSpidev = MagicMock()
+modules = {
+    "RPi": MockRPi,
+    "RPi.GPIO": MockRPi.GPIO,
+    "spidev": MockSpidev
+}
+
+patcher = patch.dict("sys.modules", modules)
+patcher.start()
 
 
 class TestILI9486(object):
diff --git a/gfxlcd/tests/test_nju6450.py b/gfxlcd/tests/test_nju6450.py
index 1267157..55c99d0 100644
--- a/gfxlcd/tests/test_nju6450.py
+++ b/gfxlcd/tests/test_nju6450.py
@@ -2,6 +2,18 @@ import sys
 sys.path.append("../../")
 from gfxlcd.driver.nju6450.gpio import GPIO
 from gfxlcd.driver.nju6450.nju6450 import NJU6450
+from unittest.mock import patch, MagicMock
+
+MockRPi = MagicMock()
+MockSpidev = MagicMock()
+modules = {
+    "RPi": MockRPi,
+    "RPi.GPIO": MockRPi.GPIO,
+    "spidev": MockSpidev
+}
+
+patcher = patch.dict("sys.modules", modules)
+patcher.start()
 
 
 class TestNJU6450(object):
diff --git a/gfxlcd/tests/test_ssd1306.py b/gfxlcd/tests/test_ssd1306.py
index 9951a26..9e92f92 100644
--- a/gfxlcd/tests/test_ssd1306.py
+++ b/gfxlcd/tests/test_ssd1306.py
@@ -2,6 +2,18 @@ import sys
 sys.path.append("../../")
 from gfxlcd.driver.ssd1306.spi import SPI
 from gfxlcd.driver.ssd1306.ssd1306 import SSD1306
+from unittest.mock import patch, MagicMock
+
+MockRPi = MagicMock()
+MockSpidev = MagicMock()
+modules = {
+    "RPi": MockRPi,
+    "RPi.GPIO": MockRPi.GPIO,
+    "spidev": MockSpidev
+}
+
+patcher = patch.dict("sys.modules", modules)
+patcher.start()
 
 
 class TestNJU6450(object):
diff --git a/tox.ini b/tox.ini
index 6e150c4..22e5f3a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,8 +10,6 @@ deps=
     flake8
     pylint
     charlcd
-    spidev
-    GPIO
 whitelist_externals = /bin/bash
 commands= nosetests --with-xunit --xunit-file=junit-{envname}.xml gfxlcd/tests
     rm flake8-{envname}.log -f