diff --git a/httpx/_content.py b/httpx/_content.py
index 1c450b75..b16e12d9 100644
--- a/httpx/_content.py
+++ b/httpx/_content.py
@@ -54,10 +54,10 @@ class IteratorByteStream(SyncByteStream):
         self._is_stream_consumed = True
         if hasattr(self._stream, "read"):
             # File-like interfaces should use 'read' directly.
-            chunk = self._stream.read(self.CHUNK_SIZE)  # type: ignore
+            chunk = self._stream.read(self.CHUNK_SIZE)
             while chunk:
                 yield chunk
-                chunk = self._stream.read(self.CHUNK_SIZE)  # type: ignore
+                chunk = self._stream.read(self.CHUNK_SIZE)
         else:
             # Otherwise iterate.
             for part in self._stream:
@@ -79,10 +79,10 @@ class AsyncIteratorByteStream(AsyncByteStream):
         self._is_stream_consumed = True
         if hasattr(self._stream, "aread"):
             # File-like interfaces should use 'aread' directly.
-            chunk = await self._stream.aread(self.CHUNK_SIZE)  # type: ignore
+            chunk = await self._stream.aread(self.CHUNK_SIZE)
             while chunk:
                 yield chunk
-                chunk = await self._stream.aread(self.CHUNK_SIZE)  # type: ignore
+                chunk = await self._stream.aread(self.CHUNK_SIZE)
         else:
             # Otherwise iterate.
             async for part in self._stream:
@@ -107,7 +107,6 @@ class UnattachedStream(AsyncByteStream, SyncByteStream):
 def encode_content(
     content: Union[str, bytes, Iterable[bytes], AsyncIterable[bytes]]
 ) -> Tuple[Dict[str, str], Union[SyncByteStream, AsyncByteStream]]:
-
     if isinstance(content, (bytes, str)):
         body = content.encode("utf-8") if isinstance(content, str) else content
         content_length = len(body)
diff --git a/httpx/_transports/default.py b/httpx/_transports/default.py
index dfd274e7..fca7de98 100644
--- a/httpx/_transports/default.py
+++ b/httpx/_transports/default.py
@@ -106,7 +106,7 @@ class ResponseStream(SyncByteStream):
 
     def close(self) -> None:
         if hasattr(self._httpcore_stream, "close"):
-            self._httpcore_stream.close()  # type: ignore
+            self._httpcore_stream.close()
 
 
 class HTTPTransport(BaseTransport):
@@ -241,7 +241,7 @@ class AsyncResponseStream(AsyncByteStream):
 
     async def aclose(self) -> None:
         if hasattr(self._httpcore_stream, "aclose"):
-            await self._httpcore_stream.aclose()  # type: ignore
+            await self._httpcore_stream.aclose()
 
 
 class AsyncHTTPTransport(AsyncBaseTransport):
diff --git a/requirements.txt b/requirements.txt
index ea096679..0dff922f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ flake8-pie==0.16.0; python_version>='3.7'
 importlib-metadata==4.13.0; python_version>='3.7'
 isort==5.11.4; python_version<'3.8'
 isort==5.12.0; python_version>='3.8'
-mypy==0.982
+mypy==1.0.1
 types-certifi==2021.10.8.2
 pytest==7.2.1
 trio==0.22.0