diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index d13e04f..ac50a53 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v4
@@ -38,6 +38,9 @@ jobs:
         flake8 tests --count --select=E9,F63,F7 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 tests --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Install package
+      run: |
+        python -m pip install .
     - name: Test with pytest
       run: |
         pytest
diff --git a/src/dllist.c b/src/dllist.c
index 9441634..5ae7339 100644
--- a/src/dllist.c
+++ b/src/dllist.c
@@ -1796,7 +1796,6 @@ static PyObject* dllistiterator_new(PyTypeObject* type,
 static DLListNodeObject* dllistiterator_advance(PyObject* self)
 {
     DLListIteratorObject* iter_self = (DLListIteratorObject*)self;
-    PyObject* value;
 
     if (iter_self->current_node == NULL)
     {
diff --git a/src/sllist.c b/src/sllist.c
index 8c883da..2b7806d 100644
--- a/src/sllist.c
+++ b/src/sllist.c
@@ -1761,7 +1761,6 @@ static PyObject* sllistiterator_new(PyTypeObject* type,
 static SLListNodeObject* sllistiterator_advance(PyObject* self)
 {
     SLListIteratorObject* iter_self = (SLListIteratorObject*)self;
-    PyObject* value;
 
     if (iter_self->current_node == NULL)
     {
diff --git a/tests/speed_test.py b/tests/speed_test.py
index 479e5ff..54c9056 100644
--- a/tests/speed_test.py
+++ b/tests/speed_test.py
@@ -19,7 +19,7 @@ def __enter__(self):
 
     def __exit__(self, *exc_details):
         stop_time = time.time()
-        assert(self._start_time is not None)
+        assert self._start_time is not None
         self.elapsed += stop_time - self._start_time