diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index 74eb80635af2..38b7e677bb07 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -789,6 +789,8 @@ def all(i: Iterable[object]) -> bool: ...
 def any(i: Iterable[object]) -> bool: ...
 def ascii(o: object) -> str: ...
 def bin(number: int) -> str: ...
+if sys.version_info >= (3, 7):
+    def breakpoint(*args: Any, **kws: Any) -> None: ...
 def callable(o: object) -> bool: ...
 def chr(code: int) -> str: ...
 def compile(source: Any, filename: Union[str, bytes], mode: str, flags: int = ..., dont_inherit: int = ...) -> CodeType: ...
diff --git a/stdlib/3/time.pyi b/stdlib/3/time.pyi
index bde37d2eead4..80a435f74408 100644
--- a/stdlib/3/time.pyi
+++ b/stdlib/3/time.pyi
@@ -92,3 +92,11 @@ if sys.version_info >= (3, 3):
         def clock_getres(clk_id: int) -> float: ...  # Unix only
         def clock_gettime(clk_id: int) -> float: ...  # Unix only
         def clock_settime(clk_id: int, time: float) -> None: ...  # Unix only
+
+if sys.version_info >= (3, 7):
+    def clock_gettime_ns(clock_id: int) -> int: ...
+    def clock_settime_ns(clock_id: int, time: int) -> int: ...
+    def monotonic_ns() -> int: ...
+    def perf_counter_ns() -> int: ...
+    def process_time_ns() -> int: ...
+    def time_ns() -> int: ...