diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fc6d9e10c..e5cc56230 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -43,6 +43,6 @@ repos:
     -   id: changelogs-rst
         name: changelog filenames
         language: fail
-        entry: 'changelog files must be named ####.(feature|bugfix|doc|removal|vendor|trivial).rst'
+        entry: 'changelog files must be named ####.(feature|bugfix|doc|deprecation|removal|vendor|trivial).rst'
         exclude: changelog/(\d+\.(feature|bugfix|doc|deprecation|removal|vendor|trivial).rst|README.rst|_template.rst)
         files: ^changelog/
diff --git a/changelog/3988.deprecation.rst b/changelog/3988.deprecation.rst
new file mode 100644
index 000000000..b731112e4
--- /dev/null
+++ b/changelog/3988.deprecation.rst
@@ -0,0 +1 @@
+Add a Deprecation warning for pytest.ensuretemp as it was deprecated since a while.
diff --git a/doc/en/tmpdir.rst b/doc/en/tmpdir.rst
index 1c815c8d1..728621152 100644
--- a/doc/en/tmpdir.rst
+++ b/doc/en/tmpdir.rst
@@ -6,7 +6,7 @@ Temporary directories and files
 ================================================
 
 The ``tmp_path`` fixture
-----------------------
+------------------------
 
 .. versionadded:: 3.9
 
@@ -15,12 +15,16 @@ You can use the ``tmpdir`` fixture which will
 provide a temporary directory unique to the test invocation,
 created in the `base temporary directory`_.
 
-``tmpdir`` is a `pathlib/pathlib2.Path`_ object. Here is an example test usage::
+``tmpdir`` is a ``pathlib/pathlib2.Path`` object. Here is an example test usage:
+
+.. code-block:: python
 
     # content of test_tmp_path.py
     import os
+
     CONTENT = u"content"
 
+
     def test_create_file(tmp_path):
         d = tmp_path / "sub"
         d.mkdir()
@@ -38,8 +42,8 @@ Running this would result in a passed test except for the last
 
 
 
-The ``tmp_path_facotry`` fixture
-------------------------------
+The ``tmp_path_factory`` fixture
+--------------------------------
 
 .. versionadded:: 3.9
 
@@ -47,7 +51,7 @@ The ``tmp_path_facotry`` fixture
 The ``tmp_path_facotry`` is a session-scoped fixture which can be used
 to create arbitrary temporary directories from any other fixture or test.
 
-its intended to replace ``tmpdir_factory``
+its intended to replace ``tmpdir_factory`` and returns :class:`pathlib.Path` instances.
 
 
 The 'tmpdir' fixture
diff --git a/src/_pytest/tmpdir.py b/src/_pytest/tmpdir.py
index e86994b8e..1963f14c0 100644
--- a/src/_pytest/tmpdir.py
+++ b/src/_pytest/tmpdir.py
@@ -25,8 +25,8 @@ class TempPathFactory(object):
 
     The base directory can be configured using the ``--basetemp`` option."""
 
-    given_basetemp = attr.ib()
-    trace = attr.ib()
+    _given_basetemp = attr.ib()
+    _trace = attr.ib()
     _basetemp = attr.ib(default=None)
 
     @classmethod
@@ -45,14 +45,14 @@ class TempPathFactory(object):
             p.mkdir()
         else:
             p = make_numbered_dir(root=self.getbasetemp(), prefix=basename)
-            self.trace("mktemp", p)
+            self._trace("mktemp", p)
         return p
 
     def getbasetemp(self):
         """ return base temporary directory. """
         if self._basetemp is None:
-            if self.given_basetemp is not None:
-                basetemp = Path(self.given_basetemp)
+            if self._given_basetemp is not None:
+                basetemp = Path(self._given_basetemp)
                 ensure_reset_dir(basetemp)
             else:
                 from_env = os.environ.get("PYTEST_DEBUG_TEMPROOT")
@@ -67,7 +67,7 @@ class TempPathFactory(object):
                 )
             assert basetemp is not None
             self._basetemp = t = basetemp
-            self.trace("new basetemp", t)
+            self._trace("new basetemp", t)
             return t
         else:
             return self._basetemp