diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index 6cee7e0..bccca41 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -7,7 +7,7 @@ services:
       dockerfile: ./Dockerfile
       args:
         # [Choice] Python version: 3, 3.8, 3.7, 3.6
-        VARIANT: 3.9
+        VARIANT: 3.12
         # [Choice] Install Node.js
         INSTALL_NODE: "true"
         NODE_VERSION: "lts/*"
diff --git a/.github/workflows/pypi_publish.yaml b/.github/workflows/pypi_publish.yaml
index 111d4d4..bbc2fb4 100644
--- a/.github/workflows/pypi_publish.yaml
+++ b/.github/workflows/pypi_publish.yaml
@@ -12,10 +12,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python 3.9
-        uses: actions/setup-python@v4
+      - name: Set up Python 3.12
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.9"
+          python-version: '3.12'
 
       - name: Ensure package version and tag name are equal
         run: |