diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 20cede3b7..1741136df 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: 21.11b1
+    rev: 21.12b0
     hooks:
     -   id: black
         args: [--safe, --quiet]
diff --git a/src/_pytest/_argcomplete.py b/src/_pytest/_argcomplete.py
index 41d9d9407..120f09ff6 100644
--- a/src/_pytest/_argcomplete.py
+++ b/src/_pytest/_argcomplete.py
@@ -108,7 +108,6 @@ if os.environ.get("_ARGCOMPLETE"):
     def try_argcomplete(parser: argparse.ArgumentParser) -> None:
         argcomplete.autocomplete(parser, always_complete_options=False)
 
-
 else:
 
     def try_argcomplete(parser: argparse.ArgumentParser) -> None:
diff --git a/src/_pytest/assertion/rewrite.py b/src/_pytest/assertion/rewrite.py
index 456681ab2..50b367e25 100644
--- a/src/_pytest/assertion/rewrite.py
+++ b/src/_pytest/assertion/rewrite.py
@@ -324,7 +324,6 @@ if sys.platform == "win32":
             return False
         return True
 
-
 else:
 
     def _write_pyc(
diff --git a/src/_pytest/compat.py b/src/_pytest/compat.py
index 7703dee8c..5af01eb7d 100644
--- a/src/_pytest/compat.py
+++ b/src/_pytest/compat.py
@@ -192,7 +192,6 @@ if sys.version_info < (3, 7):
     def nullcontext():
         yield
 
-
 else:
     from contextlib import nullcontext as nullcontext  # noqa: F401
 
diff --git a/src/_pytest/pathlib.py b/src/_pytest/pathlib.py
index b44753e1a..b23e51d44 100644
--- a/src/_pytest/pathlib.py
+++ b/src/_pytest/pathlib.py
@@ -562,7 +562,6 @@ if sys.platform.startswith("win"):
     def _is_same(f1: str, f2: str) -> bool:
         return Path(f1) == Path(f2) or os.path.samefile(f1, f2)
 
-
 else:
 
     def _is_same(f1: str, f2: str) -> bool: