diff --git a/packages/toolbox-core/pyproject.toml b/packages/toolbox-core/pyproject.toml
index 729311e7..81c71d43 100644
--- a/packages/toolbox-core/pyproject.toml
+++ b/packages/toolbox-core/pyproject.toml
@@ -46,7 +46,7 @@ Changelog = "https://github.com/googleapis/mcp-toolbox-sdk-python/blob/main/pack
 test = [
     "black[jupyter]==25.1.0",
     "isort==6.0.1",
-    "mypy==1.17.0",
+    "mypy==1.17.1",
     "pytest==8.4.1",
     "pytest-aioresponses==0.3.0",
     "pytest-asyncio==1.1.0",
diff --git a/packages/toolbox-langchain/pyproject.toml b/packages/toolbox-langchain/pyproject.toml
index 6a3c9c89..5f17d451 100644
--- a/packages/toolbox-langchain/pyproject.toml
+++ b/packages/toolbox-langchain/pyproject.toml
@@ -46,7 +46,7 @@ Changelog = "https://github.com/googleapis/mcp-toolbox-sdk-python/blob/main/pack
 test = [
     "black[jupyter]==25.1.0",
     "isort==6.0.1",
-    "mypy==1.17.0",
+    "mypy==1.17.1",
     "pytest-asyncio==1.1.0",
     "pytest==8.4.1",
     "pytest-cov==6.2.1",
diff --git a/packages/toolbox-llamaindex/pyproject.toml b/packages/toolbox-llamaindex/pyproject.toml
index 1d5ee5a5..c46a8d04 100644
--- a/packages/toolbox-llamaindex/pyproject.toml
+++ b/packages/toolbox-llamaindex/pyproject.toml
@@ -46,7 +46,7 @@ Changelog = "https://github.com/googleapis/mcp-toolbox-sdk-python/blob/main/pack
 test = [
     "black[jupyter]==25.1.0",
     "isort==6.0.1",
-    "mypy==1.17.0",
+    "mypy==1.17.1",
     "pytest-asyncio==1.1.0",
     "pytest==8.4.1",
     "pytest-cov==6.2.1",