diff --git a/.agents/skills/setup-dev-env/SKILL.md b/.agents/skills/setup-dev-env/SKILL.md
index 0344c4bcf4..4077b91cc7 100644
--- a/.agents/skills/setup-dev-env/SKILL.md
+++ b/.agents/skills/setup-dev-env/SKILL.md
@@ -10,7 +10,7 @@ Set up the local development environment for ADK Python.
 
 Check the following before proceeding:
 
-1. **Python 3.10+** (3.11+ strongly recommended)
+1. **Python 3.11+**
 
    ```bash
    python3 --version
diff --git a/AGENTS.md b/AGENTS.md
index b2beff1d41..8aa2e317f6 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -169,7 +169,7 @@ automatically discover and load agents without additional configuration.
 
 **Minimum requirements:**
 
-- Python 3.10+ (**Python 3.11+ strongly recommended** for best performance)
+- Python 3.11+
 - `uv` package manager (**required** - faster than pip/venv)
 
 **Install uv if not already installed:** `bash curl -LsSf
diff --git a/README.md b/README.md
index 75410263d5..839fb600c7 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ ______________________________________________________________________
 pip install google-adk==2.0.0a1
 ```
 
-**Requirements:** Python 3.10+ (Python 3.11+ recommended).
+**Requirements:** Python 3.11+.
 
 ## Quick Start
 
diff --git a/contributing/samples/mcp_server_side_sampling/README.md b/contributing/samples/mcp_server_side_sampling/README.md
index 5fe96184c8..086c03848c 100644
--- a/contributing/samples/mcp_server_side_sampling/README.md
+++ b/contributing/samples/mcp_server_side_sampling/README.md
@@ -22,7 +22,7 @@ The flow is as follows:
 
 ### Prerequisites
 
-- Python 3.10+
+- Python 3.11+
 - `google-adk` library installed.
 - A configured OpenAI API key.
 
diff --git a/pyproject.toml b/pyproject.toml
index eef52e40b3..824a3dcee0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@
 name = "google-adk"
 description = "Agent Development Kit"
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 license = { file = "LICENSE" }
 authors = [{ name = "Google LLC", email = "googleapis-packages@google.com" }]
 classifiers = [ # List of https://pypi.org/classifiers/
@@ -14,7 +14,6 @@ classifiers = [ # List of https://pypi.org/classifiers/
   "Intended Audience :: Science/Research",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
@@ -219,7 +218,7 @@ asyncio_mode = "auto"
 
 
 [tool.mypy]
-python_version = "3.10"
+python_version = "3.11"
 exclude = ["tests/", "contributing/samples/"]
 plugins = ["pydantic.mypy"]
 strict = true