diff --git a/stdlib/3/signal.pyi b/stdlib/3/signal.pyi
index dd457d8cc..7cf810d6a 100644
--- a/stdlib/3/signal.pyi
+++ b/stdlib/3/signal.pyi
@@ -1,5 +1,6 @@
 """Stub file for the 'signal' module."""
 
+import sys
 from enum import IntEnum
 from typing import Any, Callable, Tuple, Union, Optional, Iterable, Set
 from types import FrameType
@@ -135,6 +136,10 @@ def alarm(time: int) -> int: ...
 def default_int_handler(signum: int, frame: FrameType) -> None: ...
 def getitimer(which: int) -> Tuple[float, float]: ...
 def getsignal(signalnum: _SIGNUM) -> _HANDLER: ...
+if sys.version_info >= (3, 8):
+    def strsignal(signalnum: _SIGNUM) -> Optional[str]: ...
+    def valid_signals() -> Set[Signals]: ...
+    def raise_signal(signalnum: _SIGNUM) -> None: ...
 def pause() -> None: ...
 def pthread_kill(thread_id: int, signum: int) -> None: ...
 def pthread_sigmask(how: int, mask: Iterable[int]) -> Set[_SIGNUM]: ...