diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1e879c1dc..cbf1b5942 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  "packages/toolbox-langchain": "1.0.0",
+  "packages/toolbox-langchain": "1.0.1",
   "packages/toolbox-core": "1.1.0",
   "packages/toolbox-llamaindex": "0.6.0",
   "packages/toolbox-adk": "1.0.1"
diff --git a/packages/toolbox-langchain/CHANGELOG.md b/packages/toolbox-langchain/CHANGELOG.md
index 1ba381f54..0fcba89fb 100644
--- a/packages/toolbox-langchain/CHANGELOG.md
+++ b/packages/toolbox-langchain/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [1.0.1](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v1.0.0...toolbox-langchain-v1.0.1) (2026-05-18)
+
+
+### Documentation
+
+* Consolidate and improve `DEVELOPER.md` and `CONTRIBUTING.md` ([#636](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/636)) ([7d08938](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/7d0893801668fc122a62da4cb9979e85db4cd598))
+* migrate documentation links to mcp-toolbox.dev ([#624](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/624)) ([bfb1b02](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/bfb1b02377cf98010abbaf641eca04629a796694))
+* rebrand references for repo and docsite ([#635](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/635)) ([95b484b](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/95b484bef3d1390110f129fd6eb5c0f96dde838c))
+
 ## [1.0.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v0.6.0...toolbox-langchain-v1.0.0) (2026-03-25)
 
 
diff --git a/packages/toolbox-langchain/src/toolbox_langchain/version.py b/packages/toolbox-langchain/src/toolbox_langchain/version.py
index 756f75ffc..136838ec7 100644
--- a/packages/toolbox-langchain/src/toolbox_langchain/version.py
+++ b/packages/toolbox-langchain/src/toolbox_langchain/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.0.0"
+__version__ = "1.0.1"