diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 154e88aa8..991b7eab9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -2,5 +2,5 @@
   "packages/toolbox-langchain": "1.3.0",
   "packages/toolbox-core": "1.4.0",
   "packages/toolbox-llamaindex": "0.8.0",
-  "packages/toolbox-adk": "1.3.1"
+  "packages/toolbox-adk": "1.4.0"
 }
\ No newline at end of file
diff --git a/packages/toolbox-adk/CHANGELOG.md b/packages/toolbox-adk/CHANGELOG.md
index 044994349..0c0bb6adc 100644
--- a/packages/toolbox-adk/CHANGELOG.md
+++ b/packages/toolbox-adk/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [1.4.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-adk-v1.3.1...toolbox-adk-v1.4.0) (2026-09-01)
+
+
+### Features
+
+* **adk:** support secure parameters in ADK tools and toolset ([50fa8d5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/50fa8d573589696b2831af900f17b496e50b8d4e))
+
+> [!NOTE]
+> For additional changelogs of the underlying `toolbox-core` package, visit: https://github.com/googleapis/mcp-toolbox-sdk-python/releases/tag/toolbox-core-v1.4.0
+
+
 ## [1.3.1](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-adk-v1.3.0...toolbox-adk-v1.3.1) (2026-07-29)
 
 
diff --git a/packages/toolbox-adk/pyproject.toml b/packages/toolbox-adk/pyproject.toml
index 7f724001b..a89e8f13f 100644
--- a/packages/toolbox-adk/pyproject.toml
+++ b/packages/toolbox-adk/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
 ]
 requires-python = ">=3.10"
 dependencies = [
-    "toolbox-core==1.3.0",
+    "toolbox-core==1.4.0",
     "google-auth>=2.47.0,<3.0.0",
     "google-auth-oauthlib>=1.2.0,<2.0.0",
     "google-adk>=1.27.4,<3.0.0", 
diff --git a/packages/toolbox-adk/src/toolbox_adk/version.py b/packages/toolbox-adk/src/toolbox_adk/version.py
index 18cb9bf0e..60cfa0734 100644
--- a/packages/toolbox-adk/src/toolbox_adk/version.py
+++ b/packages/toolbox-adk/src/toolbox_adk/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.3.1"
+__version__ = "1.4.0"