diff --git a/stdlib/2and3/time.pyi b/stdlib/2and3/time.pyi
index 7d46ade8ad43..b04e6164b652 100644
--- a/stdlib/2and3/time.pyi
+++ b/stdlib/2and3/time.pyi
@@ -15,6 +15,11 @@ daylight: int
 timezone: int
 tzname: Tuple[str, str]
 
+if sys.version_info >= (3, 7) and sys.platform != 'win32':
+    CLOCK_BOOTTIME: int  # Linux
+    CLOCK_PROF: int  # FreeBSD, NetBSD, OpenBSD
+    CLOCK_UPTIME: int  # FreeBSD, OpenBSD
+
 if sys.version_info >= (3, 3) and sys.platform != 'win32':
     CLOCK_HIGHRES: int = ...  # Solaris only
     CLOCK_MONOTONIC: int = ...  # Unix only
@@ -94,3 +99,5 @@ if sys.version_info >= (3, 7):
     def perf_counter_ns() -> int: ...
     def process_time_ns() -> int: ...
     def time_ns() -> int: ...
+    def thread_time() -> float: ...
+    def thread_time_ns() -> int: ...
diff --git a/stdlib/2and3/uu.pyi b/stdlib/2and3/uu.pyi
index ee01c35967ef..c926dbba2a37 100644
--- a/stdlib/2and3/uu.pyi
+++ b/stdlib/2and3/uu.pyi
@@ -1,10 +1,13 @@
 # Stubs for uu (Python 2 and 3)
-
+import sys
 from typing import BinaryIO, Union, Optional, Text
 
 _File = Union[Text, BinaryIO]
 
 class Error(Exception): ...
 
-def encode(in_file: _File, out_file: _File, name: Optional[str] = ..., mode: Optional[int] = ...) -> None: ...
+if sys.version_info >= (3, 7):
+    def encode(in_file: _File, out_file: _File, name: Optional[str] = ..., mode: Optional[int] = ..., backtick: bool = ...) -> None: ...
+else:
+    def encode(in_file: _File, out_file: _File, name: Optional[str] = ..., mode: Optional[int] = ...) -> None: ...
 def decode(in_file: _File, out_file: Optional[_File] = ..., mode: Optional[int] = ..., quiet: int = ...) -> None: ...
diff --git a/stdlib/3.5/zipapp.pyi b/stdlib/3.5/zipapp.pyi
index 9fac5a026aff..b90b7559ce1d 100644
--- a/stdlib/3.5/zipapp.pyi
+++ b/stdlib/3.5/zipapp.pyi
@@ -1,11 +1,16 @@
 # Stubs for zipapp (Python 3.5+)
 
 from pathlib import Path
-from typing import BinaryIO, Optional, Union
+import sys
+from typing import BinaryIO, Callable, Optional, Union
 
 _Path = Union[str, Path, BinaryIO]
 
 class ZipAppError(Exception): ...
 
-def create_archive(source: _Path, target: Optional[_Path] = ..., interpreter: Optional[str] = ..., main: Optional[str] = ...) -> None: ...
+if sys.version_info >= (3, 7):
+    def create_archive(source: _Path, target: Optional[_Path] = ..., interpreter: Optional[str] = ..., main: Optional[str] = ...,
+                       filter: Optional[Callable[[Path], bool]] = ..., compressed: bool = ...) -> None: ...
+else:
+    def create_archive(source: _Path, target: Optional[_Path] = ..., interpreter: Optional[str] = ..., main: Optional[str] = ...) -> None: ...
 def get_interpreter(archive: _Path) -> str: ...
diff --git a/stdlib/3/sys.pyi b/stdlib/3/sys.pyi
index e50e93aa5b4d..6d067189d040 100644
--- a/stdlib/3/sys.pyi
+++ b/stdlib/3/sys.pyi
@@ -72,6 +72,8 @@ class _flags:
     bytes_warning = 0
     quiet = 0
     hash_randomization = 0
+    if sys.version_info >= (3, 7):
+        dev_mode: int
 
 float_info = ...  # type: _float_info
 class _float_info:
diff --git a/stdlib/3/tkinter/ttk.pyi b/stdlib/3/tkinter/ttk.pyi
index 2ce9dc0c898e..b8073d0fe692 100644
--- a/stdlib/3/tkinter/ttk.pyi
+++ b/stdlib/3/tkinter/ttk.pyi
@@ -1,3 +1,4 @@
+import sys
 from typing import Any
 import tkinter
 
@@ -105,6 +106,11 @@ class Separator(Widget):
 class Sizegrip(Widget):
     def __init__(self, master=None, **kw): ...
 
+if sys.version_info >= (3, 7):
+    class Spinbox(Entry):
+        def __init__(self, master: Any = ..., **kw: Any) -> None: ...
+        def set(self, value: Any) -> None: ...
+
 class Treeview(Widget, tkinter.XView, tkinter.YView):
     def __init__(self, master=None, **kw): ...
     def bbox(self, item, column=None): ...
diff --git a/stdlib/3/unittest/mock.pyi b/stdlib/3/unittest/mock.pyi
index 888d61c3d130..f4a91521e9d2 100644
--- a/stdlib/3/unittest/mock.pyi
+++ b/stdlib/3/unittest/mock.pyi
@@ -176,3 +176,6 @@ if sys.version_info >= (3, 3):
     class PropertyMock(Mock):
         def __get__(self, obj: Any, obj_type: Any) -> Any: ...
         def __set__(self, obj: Any, val: Any) -> Any: ...
+
+if sys.version_info >= (3, 7):
+    def seal(mock: Any) -> None: ...