diff --git a/setup.py b/setup.py
index 116434d..7da66c2 100644
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,7 @@ def get_version():
             'docutils'
         ],
         'testing': [
-            'nose',
+            'pytest',
             'flake8',
             'flake8-coding',
             'flake8-copyright',
@@ -76,7 +76,6 @@ def get_version():
             'docutils',
         ],
     },
-    test_suite='nose.collector',
     entry_points="""
        [console_scripts]
        blockdiag = blockdiag.command:main
diff --git a/src/blockdiag/tests/rst/test_blockdiag_directives.py b/src/blockdiag/tests/rst/test_blockdiag_directives.py
index 0b86583..72ed086 100644
--- a/src/blockdiag/tests/rst/test_blockdiag_directives.py
+++ b/src/blockdiag/tests/rst/test_blockdiag_directives.py
@@ -24,6 +24,9 @@
 from blockdiag.tests.utils import TemporaryDirectory, capture_stderr, with_pil
 from blockdiag.utils.rst import directives
 
+TESTDIR = os.path.dirname(__file__)
+FONTPATH = os.path.join(TESTDIR, '..', 'VLGothic', 'VL-Gothic-Regular.ttf')
+
 
 class TestRstDirectives(unittest.TestCase):
     def setUp(self):
@@ -178,7 +181,7 @@ def test_setup_inline_svg_is_true_but_format_isnt_svg(self):
         self.assertEqual(nodes.image, type(doctree[0]))
 
     def test_setup_inline_svg_is_true_with_multibytes(self):
-        directives.setup(format='SVG', outputdir=self.tmpdir)
+        directives.setup(format='SVG', outputdir=self.tmpdir, fontpath=FONTPATH)
         text = (".. blockdiag::\n"
                 "\n"
                 "   あ -> い")
diff --git a/src/blockdiag/tests/test_generate_diagram.py b/src/blockdiag/tests/test_generate_diagram.py
index 361c86f..6b9a773 100644
--- a/src/blockdiag/tests/test_generate_diagram.py
+++ b/src/blockdiag/tests/test_generate_diagram.py
@@ -18,8 +18,6 @@
 import sys
 import unittest
 
-from nose.tools import nottest
-
 import blockdiag
 import blockdiag.command
 from blockdiag.tests.utils import (TemporaryDirectory, capture_stderr,
@@ -51,7 +49,7 @@ def test_generate():
     files = get_diagram_files(basepath)
     options = []
 
-    for testcase in testcase_generator(basepath, mainfunc, files, options):
+    for testcase in _testcase_generator(basepath, mainfunc, files, options):
         yield testcase
 
 
@@ -62,12 +60,11 @@ def test_generate_with_separate():
     filtered = (f for f in files if re.search('separate', f))
     options = ['--separate']
 
-    for testcase in testcase_generator(basepath, mainfunc, filtered, options):
+    for testcase in _testcase_generator(basepath, mainfunc, filtered, options):
         yield testcase
 
 
-@nottest
-def testcase_generator(basepath, mainfunc, files, options):
+def _testcase_generator(basepath, mainfunc, files, options):
     fontpath = get_fontpath(basepath)
     options = options + ['-f', fontpath]
 
diff --git a/tox.ini b/tox.ini
index 3912471..48b0c85 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,5 +18,5 @@ deps =
 passenv =
     ALL_TESTS
 commands =
-    nosetests
+    pytest
     flake8 src