diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 26b1ce2..2b2b4fa 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.50.0"
+  ".": "0.51.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index bed1034..fec95fa 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 112
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-686a9addd4f9356ca26ff3ff04e1a11466d77a412859829075566394922b715d.yml
-openapi_spec_hash: 7a9e9c2023400d44bcbfb87b7ec07708
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-e14974fd90680e5745b35d8718a1ccce2181f6d17a6e0a1fd35fc5bca88795ae.yml
+openapi_spec_hash: 1b3aa75f0ab48b122d514047f9c82873
 config_hash: 08d55086449943a8fec212b870061a3f
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8789b91..9b9df22 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.51.0 (2026-04-24)
+
+Full Changelog: [v0.50.0...v0.51.0](https://github.com/kernel/kernel-python-sdk/compare/v0.50.0...v0.51.0)
+
+### Features
+
+* Expose browser_session_id on managed auth connection ([0ccb507](https://github.com/kernel/kernel-python-sdk/commit/0ccb50744032b4c31e0575fa7b06fb20503c8f55))
+
+
+### Chores
+
+* **internal:** more robust bootstrap script ([6c9cdf3](https://github.com/kernel/kernel-python-sdk/commit/6c9cdf3ce828fab358c7e060f4e3313408cad257))
+
 ## 0.50.0 (2026-04-20)
 
 Full Changelog: [v0.49.0...v0.50.0](https://github.com/kernel/kernel-python-sdk/compare/v0.49.0...v0.50.0)
diff --git a/pyproject.toml b/pyproject.toml
index 5516926..6ff6d3c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "kernel"
-version = "0.50.0"
+version = "0.51.0"
 description = "The official Python library for the kernel API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/scripts/bootstrap b/scripts/bootstrap
index b430fee..fe8451e 100755
--- a/scripts/bootstrap
+++ b/scripts/bootstrap
@@ -4,7 +4,7 @@ set -e
 
 cd "$(dirname "$0")/.."
 
-if [ -f "Brewfile" ] && [ "$(uname -s)" = "Darwin" ] && [ "$SKIP_BREW" != "1" ] && [ -t 0 ]; then
+if [ -f "Brewfile" ] && [ "$(uname -s)" = "Darwin" ] && [ "${SKIP_BREW:-}" != "1" ] && [ -t 0 ]; then
   brew bundle check >/dev/null 2>&1 || {
     echo -n "==> Install Homebrew dependencies? (y/N): "
     read -r response
diff --git a/src/kernel/_version.py b/src/kernel/_version.py
index 81d0216..e0b52d1 100644
--- a/src/kernel/_version.py
+++ b/src/kernel/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "kernel"
-__version__ = "0.50.0"  # x-release-please-version
+__version__ = "0.51.0"  # x-release-please-version
diff --git a/src/kernel/types/auth/managed_auth.py b/src/kernel/types/auth/managed_auth.py
index d76a02f..0ac541a 100644
--- a/src/kernel/types/auth/managed_auth.py
+++ b/src/kernel/types/auth/managed_auth.py
@@ -157,6 +157,13 @@ class ManagedAuth(BaseModel):
     - Ping Identity: _.pingone.com, _.pingidentity.com
     """
 
+    browser_session_id: Optional[str] = None
+    """
+    ID of the underlying browser session driving the current flow (present when flow
+    in progress). Use this to inspect or terminate the browser session via the
+    `/browsers` API.
+    """
+
     can_reauth: Optional[bool] = None
     """
     Whether automatic re-authentication is possible (has credential, selectors, and