diff --git a/.github/workflows/ResInsightMac.yml b/.github/workflows/ResInsightMac.yml
index 1bd1d3996d..9cbc013754 100644
--- a/.github/workflows/ResInsightMac.yml
+++ b/.github/workflows/ResInsightMac.yml
@@ -70,7 +70,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: "3.12"
+          python-version: "3.13"
 
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
diff --git a/.github/workflows/ResInsightWithCache.yml b/.github/workflows/ResInsightWithCache.yml
index c39d912df9..ee949d2d67 100644
--- a/.github/workflows/ResInsightWithCache.yml
+++ b/.github/workflows/ResInsightWithCache.yml
@@ -102,7 +102,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: "3.12"
+          python-version: "3.13"
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
 
diff --git a/.github/workflows/python-linting.yml b/.github/workflows/python-linting.yml
index 1f2ea4c9c4..9caafe2c08 100644
--- a/.github/workflows/python-linting.yml
+++ b/.github/workflows/python-linting.yml
@@ -9,7 +9,7 @@ jobs:
       - uses: actions/checkout@v7
       - uses: actions/setup-python@v7
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Install ruff
         run: pip install "ruff==0.15.*"
diff --git a/.github/workflows/spell-check-pr.yml b/.github/workflows/spell-check-pr.yml
index 4f5cbde186..015c8022c7 100644
--- a/.github/workflows/spell-check-pr.yml
+++ b/.github/workflows/spell-check-pr.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       
       - name: Install codespell
         run: pip install codespell
diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index 870641c05b..7b541105bd 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       
       - name: Install codespell
         run: pip install codespell
diff --git a/.github/workflows/test-latest-rips-with-latest-resinsight.yml b/.github/workflows/test-latest-rips-with-latest-resinsight.yml
index 0976b48519..b8c7604d30 100644
--- a/.github/workflows/test-latest-rips-with-latest-resinsight.yml
+++ b/.github/workflows/test-latest-rips-with-latest-resinsight.yml
@@ -49,7 +49,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: "3.12"
+          python-version: "3.13"
 
       - name: Install latest rips from PyPI
         run: |