diff --git a/stdlib/_asyncio.pyi b/stdlib/_asyncio.pyi
index 89cdff6cc283..be486fddb12d 100644
--- a/stdlib/_asyncio.pyi
+++ b/stdlib/_asyncio.pyi
@@ -2,13 +2,10 @@ import sys
 from asyncio.events import AbstractEventLoop
 from collections.abc import Awaitable, Callable, Coroutine, Generator
 from contextvars import Context
-from types import FrameType
+from types import FrameType, GenericAlias
 from typing import Any, Literal, TextIO, TypeVar
 from typing_extensions import Self, TypeAlias
 
-if sys.version_info >= (3, 9):
-    from types import GenericAlias
-
 _T = TypeVar("_T")
 _T_co = TypeVar("_T_co", covariant=True)
 _TaskYieldType: TypeAlias = Future[object] | None
@@ -29,11 +26,7 @@ class Future(Awaitable[_T]):
     @property
     def _callbacks(self) -> list[tuple[Callable[[Self], Any], Context]]: ...
     def add_done_callback(self, fn: Callable[[Self], object], /, *, context: Context | None = None) -> None: ...
-    if sys.version_info >= (3, 9):
-        def cancel(self, msg: Any | None = None) -> bool: ...
-    else:
-        def cancel(self) -> bool: ...
-
+    def cancel(self, msg: Any | None = None) -> bool: ...
     def cancelled(self) -> bool: ...
     def done(self) -> bool: ...
     def result(self) -> _T: ...
@@ -45,15 +38,12 @@ class Future(Awaitable[_T]):
     def __await__(self) -> Generator[Any, None, _T]: ...
     @property
     def _loop(self) -> AbstractEventLoop: ...
-    if sys.version_info >= (3, 9):
-        def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+    def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
 
 if sys.version_info >= (3, 12):
     _TaskCompatibleCoro: TypeAlias = Coroutine[Any, Any, _T_co]
-elif sys.version_info >= (3, 9):
-    _TaskCompatibleCoro: TypeAlias = Generator[_TaskYieldType, None, _T_co] | Coroutine[Any, Any, _T_co]
 else:
-    _TaskCompatibleCoro: TypeAlias = Generator[_TaskYieldType, None, _T_co] | Awaitable[_T_co]
+    _TaskCompatibleCoro: TypeAlias = Generator[_TaskYieldType, None, _T_co] | Coroutine[Any, Any, _T_co]
 
 # mypy and pyright complain that a subclass of an invariant class shouldn't be covariant.
 # While this is true in general, here it's sort-of okay to have a covariant subclass,
@@ -99,13 +89,8 @@ class Task(Future[_T_co]):  # type: ignore[type-var]  # pyright: ignore[reportIn
     if sys.version_info >= (3, 11):
         def cancelling(self) -> int: ...
         def uncancel(self) -> int: ...
-    if sys.version_info < (3, 9):
-        @classmethod
-        def current_task(cls, loop: AbstractEventLoop | None = None) -> Task[Any] | None: ...
-        @classmethod
-        def all_tasks(cls, loop: AbstractEventLoop | None = None) -> set[Task[Any]]: ...
-    if sys.version_info >= (3, 9):
-        def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+
+    def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
 
 def get_event_loop() -> AbstractEventLoop: ...
 def get_running_loop() -> AbstractEventLoop: ...
diff --git a/stdlib/_blake2.pyi b/stdlib/_blake2.pyi
index 3d17cb59c79b..d578df55c2fa 100644
--- a/stdlib/_blake2.pyi
+++ b/stdlib/_blake2.pyi
@@ -1,4 +1,3 @@
-import sys
 from _typeshed import ReadableBuffer
 from typing import ClassVar, final
 from typing_extensions import Self
@@ -21,44 +20,24 @@ class blake2b:
     block_size: int
     digest_size: int
     name: str
-    if sys.version_info >= (3, 9):
-        def __new__(
-            cls,
-            data: ReadableBuffer = b"",
-            /,
-            *,
-            digest_size: int = 64,
-            key: ReadableBuffer = b"",
-            salt: ReadableBuffer = b"",
-            person: ReadableBuffer = b"",
-            fanout: int = 1,
-            depth: int = 1,
-            leaf_size: int = 0,
-            node_offset: int = 0,
-            node_depth: int = 0,
-            inner_size: int = 0,
-            last_node: bool = False,
-            usedforsecurity: bool = True,
-        ) -> Self: ...
-    else:
-        def __new__(
-            cls,
-            data: ReadableBuffer = b"",
-            /,
-            *,
-            digest_size: int = 64,
-            key: ReadableBuffer = b"",
-            salt: ReadableBuffer = b"",
-            person: ReadableBuffer = b"",
-            fanout: int = 1,
-            depth: int = 1,
-            leaf_size: int = 0,
-            node_offset: int = 0,
-            node_depth: int = 0,
-            inner_size: int = 0,
-            last_node: bool = False,
-        ) -> Self: ...
-
+    def __new__(
+        cls,
+        data: ReadableBuffer = b"",
+        /,
+        *,
+        digest_size: int = 64,
+        key: ReadableBuffer = b"",
+        salt: ReadableBuffer = b"",
+        person: ReadableBuffer = b"",
+        fanout: int = 1,
+        depth: int = 1,
+        leaf_size: int = 0,
+        node_offset: int = 0,
+        node_depth: int = 0,
+        inner_size: int = 0,
+        last_node: bool = False,
+        usedforsecurity: bool = True,
+    ) -> Self: ...
     def copy(self) -> Self: ...
     def digest(self) -> bytes: ...
     def hexdigest(self) -> str: ...
@@ -73,44 +52,24 @@ class blake2s:
     block_size: int
     digest_size: int
     name: str
-    if sys.version_info >= (3, 9):
-        def __new__(
-            cls,
-            data: ReadableBuffer = b"",
-            /,
-            *,
-            digest_size: int = 32,
-            key: ReadableBuffer = b"",
-            salt: ReadableBuffer = b"",
-            person: ReadableBuffer = b"",
-            fanout: int = 1,
-            depth: int = 1,
-            leaf_size: int = 0,
-            node_offset: int = 0,
-            node_depth: int = 0,
-            inner_size: int = 0,
-            last_node: bool = False,
-            usedforsecurity: bool = True,
-        ) -> Self: ...
-    else:
-        def __new__(
-            cls,
-            data: ReadableBuffer = b"",
-            /,
-            *,
-            digest_size: int = 32,
-            key: ReadableBuffer = b"",
-            salt: ReadableBuffer = b"",
-            person: ReadableBuffer = b"",
-            fanout: int = 1,
-            depth: int = 1,
-            leaf_size: int = 0,
-            node_offset: int = 0,
-            node_depth: int = 0,
-            inner_size: int = 0,
-            last_node: bool = False,
-        ) -> Self: ...
-
+    def __new__(
+        cls,
+        data: ReadableBuffer = b"",
+        /,
+        *,
+        digest_size: int = 32,
+        key: ReadableBuffer = b"",
+        salt: ReadableBuffer = b"",
+        person: ReadableBuffer = b"",
+        fanout: int = 1,
+        depth: int = 1,
+        leaf_size: int = 0,
+        node_offset: int = 0,
+        node_depth: int = 0,
+        inner_size: int = 0,
+        last_node: bool = False,
+        usedforsecurity: bool = True,
+    ) -> Self: ...
     def copy(self) -> Self: ...
     def digest(self) -> bytes: ...
     def hexdigest(self) -> str: ...
diff --git a/stdlib/_codecs.pyi b/stdlib/_codecs.pyi
index 11c5d58a855b..89f97edb9ba8 100644
--- a/stdlib/_codecs.pyi
+++ b/stdlib/_codecs.pyi
@@ -81,26 +81,12 @@ def escape_decode(data: str | ReadableBuffer, errors: str | None = None, /) -> t
 def escape_encode(data: bytes, errors: str | None = None, /) -> tuple[bytes, int]: ...
 def latin_1_decode(data: ReadableBuffer, errors: str | None = None, /) -> tuple[str, int]: ...
 def latin_1_encode(str: str, errors: str | None = None, /) -> tuple[bytes, int]: ...
-
-if sys.version_info >= (3, 9):
-    def raw_unicode_escape_decode(
-        data: str | ReadableBuffer, errors: str | None = None, final: bool = True, /
-    ) -> tuple[str, int]: ...
-
-else:
-    def raw_unicode_escape_decode(data: str | ReadableBuffer, errors: str | None = None, /) -> tuple[str, int]: ...
-
+def raw_unicode_escape_decode(
+    data: str | ReadableBuffer, errors: str | None = None, final: bool = True, /
+) -> tuple[str, int]: ...
 def raw_unicode_escape_encode(str: str, errors: str | None = None, /) -> tuple[bytes, int]: ...
 def readbuffer_encode(data: str | ReadableBuffer, errors: str | None = None, /) -> tuple[bytes, int]: ...
-
-if sys.version_info >= (3, 9):
-    def unicode_escape_decode(
-        data: str | ReadableBuffer, errors: str | None = None, final: bool = True, /
-    ) -> tuple[str, int]: ...
-
-else:
-    def unicode_escape_decode(data: str | ReadableBuffer, errors: str | None = None, /) -> tuple[str, int]: ...
-
+def unicode_escape_decode(data: str | ReadableBuffer, errors: str | None = None, final: bool = True, /) -> tuple[str, int]: ...
 def unicode_escape_encode(str: str, errors: str | None = None, /) -> tuple[bytes, int]: ...
 def utf_16_be_decode(data: ReadableBuffer, errors: str | None = None, final: bool = False, /) -> tuple[str, int]: ...
 def utf_16_be_encode(str: str, errors: str | None = None, /) -> tuple[bytes, int]: ...
diff --git a/stdlib/_contextvars.pyi b/stdlib/_contextvars.pyi
index c7d0814b3cb4..33df799a768c 100644
--- a/stdlib/_contextvars.pyi
+++ b/stdlib/_contextvars.pyi
@@ -1,11 +1,8 @@
-import sys
 from collections.abc import Callable, Iterator, Mapping
+from types import GenericAlias
 from typing import Any, ClassVar, Generic, TypeVar, final, overload
 from typing_extensions import ParamSpec, Self
 
-if sys.version_info >= (3, 9):
-    from types import GenericAlias
-
 _T = TypeVar("_T")
 _D = TypeVar("_D")
 _P = ParamSpec("_P")
@@ -27,8 +24,7 @@ class ContextVar(Generic[_T]):
     def get(self, default: _D, /) -> _D | _T: ...
     def set(self, value: _T, /) -> Token[_T]: ...
     def reset(self, token: Token[_T], /) -> None: ...
-    if sys.version_info >= (3, 9):
-        def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+    def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
 
 @final
 class Token(Generic[_T]):
@@ -38,8 +34,7 @@ class Token(Generic[_T]):
     def old_value(self) -> Any: ...  # returns either _T or MISSING, but that's hard to express
     MISSING: ClassVar[object]
     __hash__: ClassVar[None]  # type: ignore[assignment]
-    if sys.version_info >= (3, 9):
-        def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+    def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
 
 def copy_context() -> Context: ...