diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index 85b681a522c4..966e150897eb 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -185,6 +185,8 @@ class int:
     def __invert__(self) -> int: ...
     def __trunc__(self) -> int: ...
     if sys.version_info >= (3,):
+        def __ceil__(self) -> int: ...
+        def __floor__(self) -> int: ...
         def __round__(self, ndigits: Optional[int] = ...) -> int: ...
     def __getnewargs__(self) -> Tuple[int]: ...
 
diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
index 85b681a522c4..966e150897eb 100644
--- a/stdlib/2and3/builtins.pyi
+++ b/stdlib/2and3/builtins.pyi
@@ -185,6 +185,8 @@ class int:
     def __invert__(self) -> int: ...
     def __trunc__(self) -> int: ...
     if sys.version_info >= (3,):
+        def __ceil__(self) -> int: ...
+        def __floor__(self) -> int: ...
         def __round__(self, ndigits: Optional[int] = ...) -> int: ...
     def __getnewargs__(self) -> Tuple[int]: ...