diff --git a/.github/workflows/data-cicd.yml b/.github/workflows/data-cicd.yml
index 0e59ac188..8627c4bd7 100644
--- a/.github/workflows/data-cicd.yml
+++ b/.github/workflows/data-cicd.yml
@@ -25,6 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           uv venv
+          source .venv/bin/activate
           uv pip install -r data/requirements.txt -r requirements-dev.txt
       - run: pytest data
   #type-check:
@@ -40,6 +41,7 @@ jobs:
   #    - name: Install dependencies
   #      run: |
   #        uv venv
+  #        source .venv/bin/activate
   #        uv pip install -r data/requirements.txt -r requirements-dev.txt
   #    - name: Run mypy
   #      run: mypy --strict data
diff --git a/.github/workflows/linting.yml b/.github/workflows/linting.yml
index 061b8daba..cec94e21f 100644
--- a/.github/workflows/linting.yml
+++ b/.github/workflows/linting.yml
@@ -30,6 +30,7 @@ jobs:
       - name: Install python dependencies
         run: |
           uv venv
+          source .venv/bin/activate
           uv pip install -r data/requirements.txt -r requirements-dev.txt
       - name: Run pre-commit
         continue-on-error: ${{ github.ref == 'refs/heads/main' }}
diff --git a/.github/workflows/update-data.yml b/.github/workflows/update-data.yml
index 77c5d1c44..74f2cf880 100644
--- a/.github/workflows/update-data.yml
+++ b/.github/workflows/update-data.yml
@@ -27,6 +27,7 @@ jobs:
       - name: Install python dependencies
         run: |
           uv venv
+          source .venv/bin/activate
           uv pip install -r data/requirements.txt -r requirements-dev.txt
       - name: Download data
         continue-on-error: true # a PR deleting all data will be created if this fails => fail obvious