diff --git a/.github/workflows/model-training.yml b/.github/workflows/model-training.yml
index ea28591..ea0981c 100644
--- a/.github/workflows/model-training.yml
+++ b/.github/workflows/model-training.yml
@@ -10,7 +10,7 @@ jobs:
       - name: Setup Python und install requirements
         uses: actions/setup-python@v4
         with:
-          python-version: "3.8"
+          python-version: "3.10"
       - run: pip install -r requirements.txt
 
       - name: Train model
diff --git a/.github/workflows/production-deployment.yml b/.github/workflows/production-deployment.yml
index 22cca2b..8ab68be 100644
--- a/.github/workflows/production-deployment.yml
+++ b/.github/workflows/production-deployment.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: "3.9"
+          python-version: "3.10"
 
       - name: Install dependencies
         run: pip install -r requirements.txt
@@ -43,6 +43,10 @@ jobs:
           git commit -m "[CI] update trained model" || echo "No changes to commit"
           git push --set-upstream origin heroku
 
+      - name: Install Heroku CLI
+        run: |
+          curl https://cli-assets.heroku.com/install.sh | sh
+
       - name: Deploy to Heroku
         uses: akhileshns/heroku-deploy@v3.13.15
         with:
diff --git a/runtime.txt b/runtime.txt
new file mode 100644
index 0000000..bb60b7f
--- /dev/null
+++ b/runtime.txt
@@ -0,0 +1 @@
+python-3.10.15