diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b2bdacf4c..a8e00870d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  "packages/toolbox-langchain": "1.2.0",
+  "packages/toolbox-langchain": "1.3.0",
   "packages/toolbox-core": "1.2.0",
   "packages/toolbox-llamaindex": "0.7.0",
   "packages/toolbox-adk": "1.2.0"
diff --git a/packages/toolbox-langchain/CHANGELOG.md b/packages/toolbox-langchain/CHANGELOG.md
index 29ad9e2d6..566d82355 100644
--- a/packages/toolbox-langchain/CHANGELOG.md
+++ b/packages/toolbox-langchain/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.3.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v1.2.0...toolbox-langchain-v1.3.0) (2026-07-23)
+
+
+### Features
+
+* **core:** preserve query parameters in connection URLs for toolset binding ([#717](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/717)) ([e439ad5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/e439ad5243ff1ae579492ca3ae040bc1797de81b))
+
+
+### Miscellaneous Chores
+
+* **deps:** update mcp toolbox server version in integration tests to v1.7.0 to v1.7.0 ([#719](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/719)) ([cb2eade](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/cb2eadeb41c832da3eba4ad179eebeaf8a645f46))
+
 ## [1.2.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v1.0.1...toolbox-langchain-v1.2.0) (2026-07-09)
 
 
diff --git a/packages/toolbox-langchain/src/toolbox_langchain/version.py b/packages/toolbox-langchain/src/toolbox_langchain/version.py
index 28ad5226d..4f78e99d5 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__ = "1.2.0"
+__version__ = "1.3.0"