diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 993247868..7e37b4ad5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,16 +15,16 @@ jobs:
         experimental: [false]
         python-version: ["3.7", "3.8", "3.9", "3.10", "pypy-3.7", "pypy-3.8"]
         # Do not test on Python 3.11 pre-releases since wrapt causes problems: https://github.com/GrahamDumpleton/wrapt/issues/196
-        # include:
+        include:
           # Only test on a single configuration while there are just pre-releases
-          # - os: ubuntu-latest
-          #  experimental: true
-          #  python-version: "3.11.0-alpha.3"
+          - os: ubuntu-latest
+            experimental: true
+            python-version:  "3.11.0-alpha - 3.11.0"
       fail-fast: false
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
@@ -44,7 +44,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install dependencies
@@ -78,7 +78,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: "3.10"
     - name: Install dependencies
diff --git a/test/test_viewer.py b/test/test_viewer.py
index 20c3d2faa..5633a3bc1 100644
--- a/test/test_viewer.py
+++ b/test/test_viewer.py
@@ -37,7 +37,7 @@
 
 import can
 from can.viewer import CanViewer, parse_args
-
+from test.config import IS_CI
 
 # Allow the curses module to be missing (e.g. on PyPy on Windows)
 try:
@@ -251,9 +251,10 @@ def test_receive(self):
                     if _id["dt"] == 0:
                         self.assertEqual(_id["count"], 1)
                     else:
-                        self.assertTrue(
-                            pytest.approx(_id["dt"], 0.1)
-                        )  # dt should be ~0.1 s
+                        if not IS_CI:  # do not test timing in CI
+                            assert _id["dt"] == pytest.approx(
+                                0.1, abs=5e-2
+                            )  # dt should be ~0.1 s
                         self.assertEqual(_id["count"], 2)
                 else:
                     # Make sure dt is 0
@@ -347,7 +348,7 @@ def test_pack_unpack(self):
 
         raw_data = self.pack_data(CANOPEN_TPDO2 + 1, data_structs, 12.34, 4.5, 6)
         parsed_data = CanViewer.unpack_data(CANOPEN_TPDO2 + 1, data_structs, raw_data)
-        self.assertTrue(pytest.approx(parsed_data, [12.34, 4.5, 6]))
+        assert parsed_data == pytest.approx([12.34, 4.5, 6])
         self.assertTrue(
             isinstance(parsed_data[0], float)
             and isinstance(parsed_data[1], float)
@@ -356,14 +357,14 @@ def test_pack_unpack(self):
 
         raw_data = self.pack_data(CANOPEN_TPDO3 + 1, data_structs, 123.45, 67.89)
         parsed_data = CanViewer.unpack_data(CANOPEN_TPDO3 + 1, data_structs, raw_data)
-        self.assertTrue(pytest.approx(parsed_data, [123.45, 67.89]))
+        assert parsed_data == pytest.approx([123.45, 67.89])
         self.assertTrue(all(isinstance(d, float) for d in parsed_data))
 
         raw_data = self.pack_data(
             CANOPEN_TPDO4 + 1, data_structs, math.pi / 2.0, math.pi
         )
         parsed_data = CanViewer.unpack_data(CANOPEN_TPDO4 + 1, data_structs, raw_data)
-        self.assertTrue(pytest.approx(parsed_data, [math.pi / 2.0, math.pi]))
+        assert parsed_data == pytest.approx([math.pi / 2.0, math.pi])
         self.assertTrue(all(isinstance(d, float) for d in parsed_data))
 
         raw_data = self.pack_data(CANOPEN_TPDO1 + 2, data_structs)
diff --git a/tox.ini b/tox.ini
index 6b407dfeb..248a6fd37 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,12 @@
 [tox]
+isolated_build = true
 
 [testenv]
 deps =
-    pytest==6.2.*,>=6.2.5
+    pytest==7.1.*,>=7.1.2
     pytest-timeout==2.0.2
     pytest-cov==3.0.0
-    coverage==6.2
+    coverage==6.3
     codecov==2.1.12
     hypothesis~=6.35.0
     pyserial~=3.5