diff --git a/doc/en/changelog.rst b/doc/en/changelog.rst
index 25e5b1f92..9e699a7a0 100644
--- a/doc/en/changelog.rst
+++ b/doc/en/changelog.rst
@@ -6410,7 +6410,7 @@ Trivial/Internal Changes
 ------------------------
 
 - Show a simple and easy error when keyword expressions trigger a syntax error
-  (for example, ``"-k foo and import"`` will show an error that you can not use
+  (for example, ``"-k foo and import"`` will show an error that you cannot use
   the ``import`` keyword in expressions). (:issue:`2953`)
 
 - Change parametrized automatic test id generation to use the ``__name__``
diff --git a/src/_pytest/_py/path.py b/src/_pytest/_py/path.py
index 7bb3693f9..e8c092cc4 100644
--- a/src/_pytest/_py/path.py
+++ b/src/_pytest/_py/path.py
@@ -1047,7 +1047,7 @@ class LocalPath:
     def pypkgpath(self):
         """Return the Python package path by looking for the last
         directory upwards which still contains an __init__.py.
-        Return None if a pkgpath can not be determined.
+        Return None if a pkgpath cannot be determined.
         """
         pkgpath = None
         for parent in self.parts(reverse=True):
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 7ff27643f..fcba5a112 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -454,7 +454,7 @@ class PytestPluginManager(PluginManager):
         # (see issue #1073).
         if not name.startswith("pytest_"):
             return None
-        # Ignore names which can not be hooks.
+        # Ignore names which cannot be hooks.
         if name == "pytest_plugins":
             return None
 
diff --git a/src/_pytest/pathlib.py b/src/_pytest/pathlib.py
index e39f47723..3efd2b1d7 100644
--- a/src/_pytest/pathlib.py
+++ b/src/_pytest/pathlib.py
@@ -732,7 +732,7 @@ def resolve_package_path(path: Path) -> Optional[Path]:
     """Return the Python package path by looking for the last
     directory upwards which still contains an __init__.py.
 
-    Returns None if it can not be determined.
+    Returns None if it cannot be determined.
     """
     result = None
     for parent in itertools.chain((path,), path.parents):
diff --git a/testing/test_junitxml.py b/testing/test_junitxml.py
index 3b92d65bd..86edfbbeb 100644
--- a/testing/test_junitxml.py
+++ b/testing/test_junitxml.py
@@ -1002,7 +1002,7 @@ class TestNonPython:
 
 @pytest.mark.parametrize("junit_logging", ["no", "system-out"])
 def test_nullbyte(pytester: Pytester, junit_logging: str) -> None:
-    # A null byte can not occur in XML (see section 2.2 of the spec)
+    # A null byte cannot occur in XML (see section 2.2 of the spec)
     pytester.makepyfile(
         """
         import sys