diff --git a/src/runloop_api_client/resources/devboxes/executions.py b/src/runloop_api_client/resources/devboxes/executions.py
index 27cd21c79..eba4a308e 100755
--- a/src/runloop_api_client/resources/devboxes/executions.py
+++ b/src/runloop_api_client/resources/devboxes/executions.py
@@ -335,7 +335,7 @@ def stream_stderr_updates(
         execution_id: str,
         *,
         devbox_id: str,
-        offset: str | NotGiven = NOT_GIVEN,
+        offset: str | NotGiven = '0',
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,
@@ -361,11 +361,15 @@ def stream_stderr_updates(
             raise ValueError(f"Expected a non-empty value for `devbox_id` but received {devbox_id!r}")
         if not execution_id:
             raise ValueError(f"Expected a non-empty value for `execution_id` but received {execution_id!r}")
-        if extra_headers and extra_headers.get(RAW_RESPONSE_HEADER):
+        
+        default_headers: Headers = {'Accept': 'text/event-stream'}
+        merged_headers = default_headers if extra_headers is None else {**default_headers, **extra_headers}
+        
+        if merged_headers and merged_headers.get(RAW_RESPONSE_HEADER):
             return self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stderr_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -383,7 +387,7 @@ def create_stream(last_offset: str | None) -> Stream[ExecutionUpdateChunk]:
             return self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stderr_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -415,7 +419,7 @@ def stream_stdout_updates(
         execution_id: str,
         *,
         devbox_id: str,
-        offset: str | NotGiven = NOT_GIVEN,
+        offset: str | NotGiven = '0',
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,
@@ -441,11 +445,15 @@ def stream_stdout_updates(
             raise ValueError(f"Expected a non-empty value for `devbox_id` but received {devbox_id!r}")
         if not execution_id:
             raise ValueError(f"Expected a non-empty value for `execution_id` but received {execution_id!r}")
-        if extra_headers and extra_headers.get(RAW_RESPONSE_HEADER):
+        
+        default_headers: Headers = {'Accept': 'text/event-stream'}
+        merged_headers = default_headers if extra_headers is None else {**default_headers, **extra_headers}
+        
+        if merged_headers and merged_headers.get(RAW_RESPONSE_HEADER):
             return self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stdout_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -463,7 +471,7 @@ def create_stream(last_offset: str | None) -> Stream[ExecutionUpdateChunk]:
             return self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stdout_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -779,7 +787,7 @@ async def stream_stderr_updates(
         execution_id: str,
         *,
         devbox_id: str,
-        offset: str | NotGiven = NOT_GIVEN,
+        offset: str | NotGiven = '0',
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,
@@ -805,11 +813,15 @@ async def stream_stderr_updates(
             raise ValueError(f"Expected a non-empty value for `devbox_id` but received {devbox_id!r}")
         if not execution_id:
             raise ValueError(f"Expected a non-empty value for `execution_id` but received {execution_id!r}")
-        if extra_headers and extra_headers.get(RAW_RESPONSE_HEADER):
+        
+        default_headers: Headers = {'Accept': 'text/event-stream'}
+        merged_headers = default_headers if extra_headers is None else {**default_headers, **extra_headers}
+        
+        if merged_headers and merged_headers.get(RAW_RESPONSE_HEADER):
             return await self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stderr_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -827,7 +839,7 @@ async def create_stream(last_offset: str | None) -> AsyncStream[ExecutionUpdateC
             return await self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stderr_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -859,7 +871,7 @@ async def stream_stdout_updates(
         execution_id: str,
         *,
         devbox_id: str,
-        offset: str | NotGiven = NOT_GIVEN,
+        offset: str | NotGiven = '0',
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,
@@ -885,12 +897,17 @@ async def stream_stdout_updates(
             raise ValueError(f"Expected a non-empty value for `devbox_id` but received {devbox_id!r}")
         if not execution_id:
             raise ValueError(f"Expected a non-empty value for `execution_id` but received {execution_id!r}")
+        
+        default_headers: Headers = {'Accept': 'text/event-stream'}
+        merged_headers = default_headers if extra_headers is None else {**default_headers, **extra_headers}
+
+        
         # If caller requested a raw or streaming response wrapper, return the underlying stream as-is
-        if extra_headers and extra_headers.get(RAW_RESPONSE_HEADER):
+        if merged_headers and merged_headers.get(RAW_RESPONSE_HEADER):
             return await self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stdout_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
@@ -908,7 +925,7 @@ async def create_stream(last_offset: str | None) -> AsyncStream[ExecutionUpdateC
             return await self._get(
                 f"/v1/devboxes/{devbox_id}/executions/{execution_id}/stream_stdout_updates",
                 options=make_request_options(
-                    extra_headers=extra_headers,
+                    extra_headers=merged_headers,
                     extra_query=extra_query,
                     extra_body=extra_body,
                     timeout=timeout,
diff --git a/uv.lock b/uv.lock
index 6a4831cd2..cc66e9065 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1242,7 +1242,7 @@ wheels = [
 
 [[package]]
 name = "runloop-api-client"
-version = "0.55.1"
+version = "0.59.0"
 source = { editable = "." }
 dependencies = [
     { name = "anyio", version = "4.5.2", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.9'" },