diff --git a/stdlib/3/collections/__init__.pyi b/stdlib/3/collections/__init__.pyi
index 1cde078da..c7183c342 100644
--- a/stdlib/3/collections/__init__.pyi
+++ b/stdlib/3/collections/__init__.pyi
@@ -183,7 +183,8 @@ class UserString(Sequence[str]):
     def zfill(self: _UserStringT, width: int) -> _UserStringT: ...
 
 
-# Technically, deque only derives from MutableSequence in 3.5.
+# Technically, deque only derives from MutableSequence in 3.5 (before then, the insert and index
+# methods did not exist).
 # But in practice it's not worth losing sleep over.
 class deque(MutableSequence[_T], Generic[_T]):
     maxlen = ...  # type: Optional[int] # TODO readonly
@@ -197,9 +198,8 @@ class deque(MutableSequence[_T], Generic[_T]):
     def count(self, x: _T) -> int: ...
     def extend(self, iterable: Iterable[_T]) -> None: ...
     def extendleft(self, iterable: Iterable[_T]) -> None: ...
-    if sys.version_info >= (3, 5):
-        def insert(self, i: int, x: _T) -> None: ...
-        def index(self, x: _T, start: int = ..., stop: int = ...) -> int: ...
+    def insert(self, i: int, x: _T) -> None: ...
+    def index(self, x: _T, start: int = ..., stop: int = ...) -> int: ...
     def pop(self, i: int = ...) -> _T: ...
     def popleft(self) -> _T: ...
     def remove(self, value: _T) -> None: ...