diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 507912c5..cf1dd2b0 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.42.0"
+  ".": "1.42.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99c96c42..1d9aa3ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.42.1 (2025-12-08)
+
+Full Changelog: [v1.42.0...v1.42.1](https://github.com/Finch-API/finch-api-python/compare/v1.42.0...v1.42.1)
+
+### Bug Fixes
+
+* **types:** allow pyright to infer TypedDict types within SequenceNotStr ([1a8a50a](https://github.com/Finch-API/finch-api-python/commit/1a8a50ab8b4a8398d00be2659827de0191067fbb))
+
 ## 1.42.0 (2025-12-02)
 
 Full Changelog: [v1.41.2...v1.42.0](https://github.com/Finch-API/finch-api-python/compare/v1.41.2...v1.42.0)
diff --git a/pyproject.toml b/pyproject.toml
index e8bc00b1..cba00405 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "finch-api"
-version = "1.42.0"
+version = "1.42.1"
 description = "The official Python library for the Finch API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/finch/_types.py b/src/finch/_types.py
index b99b2f91..c0434ccd 100644
--- a/src/finch/_types.py
+++ b/src/finch/_types.py
@@ -245,6 +245,9 @@ class HttpxSendArgs(TypedDict, total=False):
 if TYPE_CHECKING:
     # This works because str.__contains__ does not accept object (either in typeshed or at runtime)
     # https://github.com/hauntsaninja/useful_types/blob/5e9710f3875107d068e7679fd7fec9cfab0eff3b/useful_types/__init__.py#L285
+    #
+    # Note: index() and count() methods are intentionally omitted to allow pyright to properly
+    # infer TypedDict types when dict literals are used in lists assigned to SequenceNotStr.
     class SequenceNotStr(Protocol[_T_co]):
         @overload
         def __getitem__(self, index: SupportsIndex, /) -> _T_co: ...
@@ -253,8 +256,6 @@ def __getitem__(self, index: slice, /) -> Sequence[_T_co]: ...
         def __contains__(self, value: object, /) -> bool: ...
         def __len__(self) -> int: ...
         def __iter__(self) -> Iterator[_T_co]: ...
-        def index(self, value: Any, start: int = 0, stop: int = ..., /) -> int: ...
-        def count(self, value: Any, /) -> int: ...
         def __reversed__(self) -> Iterator[_T_co]: ...
 else:
     # just point this to a normal `Sequence` at runtime to avoid having to special case
diff --git a/src/finch/_version.py b/src/finch/_version.py
index 1adaf11f..b5fafd31 100644
--- a/src/finch/_version.py
+++ b/src/finch/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "finch"
-__version__ = "1.42.0"  # x-release-please-version
+__version__ = "1.42.1"  # x-release-please-version