From 30b8c013334553f994379d10f762de3826edcbce Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Wed, 8 Apr 2026 02:06:12 +0000
Subject: [PATCH 1/2] fix(client): preserve hardcoded query params when merging
 with user params

---
 src/retell/_base_client.py |  4 ++++
 tests/test_client.py       | 48 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/src/retell/_base_client.py b/src/retell/_base_client.py
index 6c7320e1..67362364 100644
--- a/src/retell/_base_client.py
+++ b/src/retell/_base_client.py
@@ -540,6 +540,10 @@ def _build_request(
                 files = cast(HttpxRequestFiles, ForceMultipartDict())
 
         prepared_url = self._prepare_url(options.url)
+        # preserve hard-coded query params from the url
+        if params and prepared_url.query:
+            params = {**dict(prepared_url.params.items()), **params}
+            prepared_url = prepared_url.copy_with(raw_path=prepared_url.raw_path.split(b"?", 1)[0])
         if "_" in prepared_url.host:
             # work around https://github.com/encode/httpx/discussions/2880
             kwargs["extensions"] = {"sni_hostname": prepared_url.host.replace("_", "-")}
diff --git a/tests/test_client.py b/tests/test_client.py
index 65b5beb7..1c9be6ab 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -427,6 +427,30 @@ def test_default_query_option(self) -> None:
 
         client.close()
 
+    def test_hardcoded_query_params_in_url(self, client: Retell) -> None:
+        request = client._build_request(FinalRequestOptions(method="get", url="/foo?beta=true"))
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true"}
+
+        request = client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/foo?beta=true",
+                params={"limit": "10", "page": "abc"},
+            )
+        )
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true", "limit": "10", "page": "abc"}
+
+        request = client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/files/a%2Fb?beta=true",
+                params={"limit": "10"},
+            )
+        )
+        assert request.url.raw_path == b"/files/a%2Fb?beta=true&limit=10"
+
     def test_request_extra_json(self, client: Retell) -> None:
         request = client._build_request(
             FinalRequestOptions(
@@ -1346,6 +1370,30 @@ async def test_default_query_option(self) -> None:
 
         await client.close()
 
+    async def test_hardcoded_query_params_in_url(self, async_client: AsyncRetell) -> None:
+        request = async_client._build_request(FinalRequestOptions(method="get", url="/foo?beta=true"))
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true"}
+
+        request = async_client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/foo?beta=true",
+                params={"limit": "10", "page": "abc"},
+            )
+        )
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true", "limit": "10", "page": "abc"}
+
+        request = async_client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/files/a%2Fb?beta=true",
+                params={"limit": "10"},
+            )
+        )
+        assert request.url.raw_path == b"/files/a%2Fb?beta=true&limit=10"
+
     def test_request_extra_json(self, client: Retell) -> None:
         request = client._build_request(
             FinalRequestOptions(

From d7ded970b227d270aa489441af4489246d6318c1 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Wed, 8 Apr 2026 02:06:31 +0000
Subject: [PATCH 2/2] release: 5.25.1

---
 .release-please-manifest.json | 2 +-
 CHANGELOG.md                  | 8 ++++++++
 pyproject.toml                | 2 +-
 src/retell/_version.py        | 2 +-
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8f3c6b87..1040019e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "5.25.0"
+  ".": "5.25.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7ff9f50..3e3dc5d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 5.25.1 (2026-04-08)
+
+Full Changelog: [v5.25.0...v5.25.1](https://github.com/RetellAI/retell-python-sdk/compare/v5.25.0...v5.25.1)
+
+### Bug Fixes
+
+* **client:** preserve hardcoded query params when merging with user params ([30b8c01](https://github.com/RetellAI/retell-python-sdk/commit/30b8c013334553f994379d10f762de3826edcbce))
+
 ## 5.25.0 (2026-04-02)
 
 Full Changelog: [v5.24.0...v5.25.0](https://github.com/RetellAI/retell-python-sdk/compare/v5.24.0...v5.25.0)
diff --git a/pyproject.toml b/pyproject.toml
index c0ab189b..ad59b855 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "retell-sdk"
-version = "5.25.0"
+version = "5.25.1"
 description = "The official Python library for the retell API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/retell/_version.py b/src/retell/_version.py
index 350f586d..fab01d1e 100644
--- a/src/retell/_version.py
+++ b/src/retell/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "retell"
-__version__ = "5.25.0"  # x-release-please-version
+__version__ = "5.25.1"  # x-release-please-version