diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7deae33..59565e8 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.6.0"
+  ".": "1.6.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d7b570..dae1c3a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 1.6.1 (2026-02-24)
+
+Full Changelog: [v1.6.0...v1.6.1](https://github.com/CASParser/cas-parser-python/compare/v1.6.0...v1.6.1)
+
+### Chores
+
+* **internal:** add request options to SSE classes ([7488011](https://github.com/CASParser/cas-parser-python/commit/74880111923232fba22d9870f00aabf17cd7ef2f))
+* **internal:** make `test_proxy_environment_variables` more resilient ([3608c6e](https://github.com/CASParser/cas-parser-python/commit/3608c6eddf68e65c153c4e186346b79859aab866))
+
 ## 1.6.0 (2026-02-23)
 
 Full Changelog: [v1.5.0...v1.6.0](https://github.com/CASParser/cas-parser-python/compare/v1.5.0...v1.6.0)
diff --git a/pyproject.toml b/pyproject.toml
index 85106e5..1e47163 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "cas-parser-python"
-version = "1.6.0"
+version = "1.6.1"
 description = "The official Python library for the cas-parser API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/cas_parser/_response.py b/src/cas_parser/_response.py
index a67d3f1..66c0f1a 100644
--- a/src/cas_parser/_response.py
+++ b/src/cas_parser/_response.py
@@ -152,6 +152,7 @@ def _parse(self, *, to: type[_T] | None = None) -> R | _T:
                         ),
                         response=self.http_response,
                         client=cast(Any, self._client),
+                        options=self._options,
                     ),
                 )
 
@@ -162,6 +163,7 @@ def _parse(self, *, to: type[_T] | None = None) -> R | _T:
                         cast_to=extract_stream_chunk_type(self._stream_cls),
                         response=self.http_response,
                         client=cast(Any, self._client),
+                        options=self._options,
                     ),
                 )
 
@@ -175,6 +177,7 @@ def _parse(self, *, to: type[_T] | None = None) -> R | _T:
                     cast_to=cast_to,
                     response=self.http_response,
                     client=cast(Any, self._client),
+                    options=self._options,
                 ),
             )
 
diff --git a/src/cas_parser/_streaming.py b/src/cas_parser/_streaming.py
index 00e2105..121e6be 100644
--- a/src/cas_parser/_streaming.py
+++ b/src/cas_parser/_streaming.py
@@ -4,7 +4,7 @@
 import json
 import inspect
 from types import TracebackType
-from typing import TYPE_CHECKING, Any, Generic, TypeVar, Iterator, AsyncIterator, cast
+from typing import TYPE_CHECKING, Any, Generic, TypeVar, Iterator, Optional, AsyncIterator, cast
 from typing_extensions import Self, Protocol, TypeGuard, override, get_origin, runtime_checkable
 
 import httpx
@@ -13,6 +13,7 @@
 
 if TYPE_CHECKING:
     from ._client import CasParser, AsyncCasParser
+    from ._models import FinalRequestOptions
 
 
 _T = TypeVar("_T")
@@ -22,7 +23,7 @@ class Stream(Generic[_T]):
     """Provides the core interface to iterate over a synchronous stream response."""
 
     response: httpx.Response
-
+    _options: Optional[FinalRequestOptions] = None
     _decoder: SSEBytesDecoder
 
     def __init__(
@@ -31,10 +32,12 @@ def __init__(
         cast_to: type[_T],
         response: httpx.Response,
         client: CasParser,
+        options: Optional[FinalRequestOptions] = None,
     ) -> None:
         self.response = response
         self._cast_to = cast_to
         self._client = client
+        self._options = options
         self._decoder = client._make_sse_decoder()
         self._iterator = self.__stream__()
 
@@ -85,7 +88,7 @@ class AsyncStream(Generic[_T]):
     """Provides the core interface to iterate over an asynchronous stream response."""
 
     response: httpx.Response
-
+    _options: Optional[FinalRequestOptions] = None
     _decoder: SSEDecoder | SSEBytesDecoder
 
     def __init__(
@@ -94,10 +97,12 @@ def __init__(
         cast_to: type[_T],
         response: httpx.Response,
         client: AsyncCasParser,
+        options: Optional[FinalRequestOptions] = None,
     ) -> None:
         self.response = response
         self._cast_to = cast_to
         self._client = client
+        self._options = options
         self._decoder = client._make_sse_decoder()
         self._iterator = self.__stream__()
 
diff --git a/src/cas_parser/_version.py b/src/cas_parser/_version.py
index 1d9ca9a..a11f5b5 100644
--- a/src/cas_parser/_version.py
+++ b/src/cas_parser/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "cas_parser"
-__version__ = "1.6.0"  # x-release-please-version
+__version__ = "1.6.1"  # x-release-please-version
diff --git a/tests/test_client.py b/tests/test_client.py
index ec19747..b0b6525 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -947,6 +947,8 @@ def retry_handler(_request: httpx.Request) -> httpx.Response:
     def test_proxy_environment_variables(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # Test that the proxy environment variables are set correctly
         monkeypatch.setenv("HTTPS_PROXY", "https://example.org")
+        # Delete in case our environment has this set
+        monkeypatch.delenv("HTTP_PROXY", raising=False)
 
         client = DefaultHttpxClient()
 
@@ -1853,6 +1855,8 @@ async def test_get_platform(self) -> None:
     async def test_proxy_environment_variables(self, monkeypatch: pytest.MonkeyPatch) -> None:
         # Test that the proxy environment variables are set correctly
         monkeypatch.setenv("HTTPS_PROXY", "https://example.org")
+        # Delete in case our environment has this set
+        monkeypatch.delenv("HTTP_PROXY", raising=False)
 
         client = DefaultAsyncHttpxClient()