diff --git a/.github/actions/setup-build-environment/action.yml b/.github/actions/setup-build-environment/action.yml
index 01c79f2e..673774e7 100644
--- a/.github/actions/setup-build-environment/action.yml
+++ b/.github/actions/setup-build-environment/action.yml
@@ -9,9 +9,9 @@ runs:
         path: |
           ~/.cache/uv
           .venv
-        key: ${{ runner.os }}-py311-uv-${{ hashFiles('uv.lock', 'pyproject.toml') }}
+        key: ${{ runner.os }}-py313-uv-${{ hashFiles('uv.lock', 'pyproject.toml') }}
         restore-keys: |
-          ${{ runner.os }}-py311-uv-
+          ${{ runner.os }}-py313-uv-
 
     - name: Restore PlatformIO Cache
       uses: actions/cache@v5
@@ -28,7 +28,7 @@ runs:
     - name: Install Python
       uses: actions/setup-python@v6
       with:
-        python-version: "3.11"
+        python-version: "3.13"
 
     - name: Install uv
       uses: astral-sh/setup-uv@v8.0.0
diff --git a/.github/workflows/eastmesh-github-pages.yml b/.github/workflows/eastmesh-github-pages.yml
index 9e232208..be77644d 100644
--- a/.github/workflows/eastmesh-github-pages.yml
+++ b/.github/workflows/eastmesh-github-pages.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v6.2.0
         with:
-          python-version: "3.11"
+          python-version: "3.13"
 
       - name: Install uv
         uses: astral-sh/setup-uv@v8.0.0
diff --git a/.python-version b/.python-version
index 2c073331..24ee5b1b 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.11
+3.13