diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 75941dcd9..2d351182e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -49,11 +49,13 @@ repos:
     hooks:
     -   id: python-use-type-annotations
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.782  # NOTE: keep this in sync with setup.cfg.
+    rev: v0.790  # NOTE: keep this in sync with setup.cfg.
     hooks:
     -   id: mypy
         files: ^(src/|testing/)
         args: []
+        additional_dependencies:
+          - iniconfig>=1.1.0
 -   repo: local
     hooks:
     -   id: rst
diff --git a/setup.cfg b/setup.cfg
index 28ec061e0..134a80b3e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -63,7 +63,7 @@ console_scripts =
 
 [options.extras_require]
 checkqa-mypy =
-    mypy==0.780
+    mypy==0.790
 testing =
     argcomplete
     hypothesis>=3.56
diff --git a/src/_pytest/cacheprovider.py b/src/_pytest/cacheprovider.py
index 2c8128f61..20f0c71d3 100755
--- a/src/_pytest/cacheprovider.py
+++ b/src/_pytest/cacheprovider.py
@@ -382,7 +382,7 @@ class NFPlugin:
             self.cached_nodeids.update(item.nodeid for item in items)
 
     def _get_increasing_order(self, items: Iterable[nodes.Item]) -> List[nodes.Item]:
-        return sorted(items, key=lambda item: item.fspath.mtime(), reverse=True)
+        return sorted(items, key=lambda item: item.fspath.mtime(), reverse=True)  # type: ignore[no-any-return]
 
     def pytest_sessionfinish(self) -> None:
         config = self.config
diff --git a/src/_pytest/capture.py b/src/_pytest/capture.py
index dbb6d478f..4d314998c 100644
--- a/src/_pytest/capture.py
+++ b/src/_pytest/capture.py
@@ -380,8 +380,7 @@ class FDCaptureBinary:
             self.syscapture = SysCapture(targetfd)
         else:
             self.tmpfile = EncodedFile(
-                # TODO: Remove type ignore, fixed in next mypy release.
-                TemporaryFile(buffering=0),  # type: ignore[arg-type]
+                TemporaryFile(buffering=0),
                 encoding="utf-8",
                 errors="replace",
                 newline="",
diff --git a/src/_pytest/compat.py b/src/_pytest/compat.py
index 0b6b1ca07..c7f86ea9c 100644
--- a/src/_pytest/compat.py
+++ b/src/_pytest/compat.py
@@ -150,9 +150,8 @@ def getfuncargnames(
         p.name
         for p in parameters.values()
         if (
-            # TODO: Remove type ignore after https://github.com/python/typeshed/pull/4383
-            p.kind is Parameter.POSITIONAL_OR_KEYWORD  # type: ignore[unreachable]
-            or p.kind is Parameter.KEYWORD_ONLY  # type: ignore[unreachable]
+            p.kind is Parameter.POSITIONAL_OR_KEYWORD
+            or p.kind is Parameter.KEYWORD_ONLY
         )
         and p.default is Parameter.empty
     )
diff --git a/src/_pytest/config/findpaths.py b/src/_pytest/config/findpaths.py
index 04fa8f375..2edf54536 100644
--- a/src/_pytest/config/findpaths.py
+++ b/src/_pytest/config/findpaths.py
@@ -27,7 +27,7 @@ def _parse_ini_config(path: Path) -> iniconfig.IniConfig:
     Raise UsageError if the file cannot be parsed.
     """
     try:
-        return iniconfig.IniConfig(path)
+        return iniconfig.IniConfig(str(path))
     except iniconfig.ParseError as exc:
         raise UsageError(str(exc)) from exc
 
diff --git a/src/_pytest/pytester.py b/src/_pytest/pytester.py
index e3094a9df..dc234dc63 100644
--- a/src/_pytest/pytester.py
+++ b/src/_pytest/pytester.py
@@ -32,6 +32,7 @@ from weakref import WeakKeyDictionary
 import attr
 import py
 from iniconfig import IniConfig
+from iniconfig import SectionWrapper
 
 import pytest
 from _pytest import timing
@@ -785,10 +786,10 @@ class Pytester:
         """Write a tox.ini file with 'source' as contents."""
         return self.makefile(".ini", tox=source)
 
-    def getinicfg(self, source: str) -> IniConfig:
+    def getinicfg(self, source: str) -> SectionWrapper:
         """Return the pytest section from the tox.ini config file."""
         p = self.makeini(source)
-        return IniConfig(p)["pytest"]
+        return IniConfig(str(p))["pytest"]
 
     def makepyprojecttoml(self, source: str) -> Path:
         """Write a pyproject.toml file with 'source' as contents.
@@ -1321,8 +1322,10 @@ class Pytester:
         """
         __tracebackhide__ = True
 
+        # TODO: Remove type ignore in next mypy release.
+        #       https://github.com/python/typeshed/pull/4582
         cmdargs = tuple(
-            os.fspath(arg) if isinstance(arg, os.PathLike) else arg for arg in cmdargs
+            os.fspath(arg) if isinstance(arg, os.PathLike) else arg for arg in cmdargs  # type: ignore[misc]
         )
         p1 = self.path.joinpath("stdout")
         p2 = self.path.joinpath("stderr")
@@ -1541,9 +1544,9 @@ class Testdir:
         """See :meth:`Pytester.makeini`."""
         return py.path.local(str(self._pytester.makeini(source)))
 
-    def getinicfg(self, source) -> py.path.local:
+    def getinicfg(self, source: str) -> SectionWrapper:
         """See :meth:`Pytester.getinicfg`."""
-        return py.path.local(str(self._pytester.getinicfg(source)))
+        return self._pytester.getinicfg(source)
 
     def makepyprojecttoml(self, source) -> py.path.local:
         """See :meth:`Pytester.makepyprojecttoml`."""
diff --git a/src/_pytest/python_api.py b/src/_pytest/python_api.py
index c4d029c0d..373435236 100644
--- a/src/_pytest/python_api.py
+++ b/src/_pytest/python_api.py
@@ -210,7 +210,7 @@ class ApproxScalar(ApproxBase):
         # tolerances, i.e. non-numerics and infinities. Need to call abs to
         # handle complex numbers, e.g. (inf + 1j).
         if (not isinstance(self.expected, (Complex, Decimal))) or math.isinf(
-            abs(self.expected)
+            abs(self.expected)  # type: ignore[arg-type]
         ):
             return str(self.expected)
 
@@ -253,8 +253,8 @@ class ApproxScalar(ApproxBase):
         # Allow the user to control whether NaNs are considered equal to each
         # other or not.  The abs() calls are for compatibility with complex
         # numbers.
-        if math.isnan(abs(self.expected)):
-            return self.nan_ok and math.isnan(abs(actual))
+        if math.isnan(abs(self.expected)):  # type: ignore[arg-type]
+            return self.nan_ok and math.isnan(abs(actual))  # type: ignore[arg-type]
 
         # Infinity shouldn't be approximately equal to anything but itself, but
         # if there's a relative tolerance, it will be infinite and infinity
@@ -262,7 +262,7 @@ class ApproxScalar(ApproxBase):
         # case would have been short circuited above, so here we can just
         # return false if the expected value is infinite.  The abs() call is
         # for compatibility with complex numbers.
-        if math.isinf(abs(self.expected)):
+        if math.isinf(abs(self.expected)):  # type: ignore[arg-type]
             return False
 
         # Return true if the two numbers are within the tolerance.
diff --git a/src/_pytest/runner.py b/src/_pytest/runner.py
index cce9bdd97..794690ddb 100644
--- a/src/_pytest/runner.py
+++ b/src/_pytest/runner.py
@@ -77,8 +77,7 @@ def pytest_terminal_summary(terminalreporter: "TerminalReporter") -> None:
                 dlist.append(rep)
     if not dlist:
         return
-    dlist.sort(key=lambda x: x.duration)
-    dlist.reverse()
+    dlist.sort(key=lambda x: x.duration, reverse=True)  # type: ignore[no-any-return]
     if not durations:
         tr.write_sep("=", "slowest durations")
     else:
diff --git a/testing/test_assertrewrite.py b/testing/test_assertrewrite.py
index 9f0aa31d1..f95fd54b3 100644
--- a/testing/test_assertrewrite.py
+++ b/testing/test_assertrewrite.py
@@ -1595,7 +1595,7 @@ class TestPyCacheDir:
         if prefix:
             if sys.version_info < (3, 8):
                 pytest.skip("pycache_prefix not available in py<38")
-            monkeypatch.setattr(sys, "pycache_prefix", prefix)  # type:ignore
+            monkeypatch.setattr(sys, "pycache_prefix", prefix)
 
         assert get_cache_dir(Path(source)) == Path(expected)
 
diff --git a/testing/test_capture.py b/testing/test_capture.py
index 7aeb2d8ac..e6bbc9a5d 100644
--- a/testing/test_capture.py
+++ b/testing/test_capture.py
@@ -1606,7 +1606,7 @@ def test_stderr_write_returns_len(capsys):
 def test_encodedfile_writelines(tmpfile: BinaryIO) -> None:
     ef = capture.EncodedFile(tmpfile, encoding="utf-8")
     with pytest.raises(TypeError):
-        ef.writelines([b"line1", b"line2"])
+        ef.writelines([b"line1", b"line2"])  # type: ignore[list-item]
     assert ef.writelines(["line3", "line4"]) is None  # type: ignore[func-returns-value]
     ef.flush()
     tmpfile.seek(0)
diff --git a/testing/test_debugging.py b/testing/test_debugging.py
index f22d5d724..2760930ef 100644
--- a/testing/test_debugging.py
+++ b/testing/test_debugging.py
@@ -886,14 +886,9 @@ class TestPDB:
 
 class TestDebuggingBreakpoints:
     def test_supports_breakpoint_module_global(self):
-        """
-        Test that supports breakpoint global marks on Python 3.7+ and not on
-        CPython 3.5, 2.7
-        """
+        """Test that supports breakpoint global marks on Python 3.7+."""
         if sys.version_info >= (3, 7):
             assert SUPPORTS_BREAKPOINT_BUILTIN is True
-        if sys.version_info.major == 3 and sys.version_info.minor == 5:
-            assert SUPPORTS_BREAKPOINT_BUILTIN is False  # type: ignore[comparison-overlap]
 
     @pytest.mark.skipif(
         not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
diff --git a/testing/test_doctest.py b/testing/test_doctest.py
index 67e93b76a..8f31cb606 100644
--- a/testing/test_doctest.py
+++ b/testing/test_doctest.py
@@ -1049,7 +1049,7 @@ class TestLiterals:
             ("1e3", "999"),
             # The current implementation doesn't understand that numbers inside
             # strings shouldn't be treated as numbers:
-            pytest.param("'3.1416'", "'3.14'", marks=pytest.mark.xfail),  # type: ignore
+            pytest.param("'3.1416'", "'3.14'", marks=pytest.mark.xfail),
         ],
     )
     def test_number_non_matches(self, pytester, expression, output):
diff --git a/testing/test_pastebin.py b/testing/test_pastebin.py
index 2a96f29a1..2a22f4056 100644
--- a/testing/test_pastebin.py
+++ b/testing/test_pastebin.py
@@ -1,3 +1,4 @@
+import io
 from typing import List
 from typing import Union
 
@@ -95,7 +96,7 @@ class TestPaste:
 
         def mocked(url, data):
             calls.append((url, data))
-            raise urllib.error.HTTPError(url, 400, "Bad request", None, None)
+            raise urllib.error.HTTPError(url, 400, "Bad request", {}, io.BytesIO())
 
         monkeypatch.setattr(urllib.request, "urlopen", mocked)
         return calls