diff --git a/.github/actions/test_setup/action.yml b/.github/actions/test_setup/action.yml
index ee6f404..c5f9959 100644
--- a/.github/actions/test_setup/action.yml
+++ b/.github/actions/test_setup/action.yml
@@ -11,5 +11,5 @@ runs:
     - uses: "./.github/actions/build-grid3d-maps"
       with:
         python-version: ${{ inputs.python-version }}
-    - run: pip install ".[tests]"
+    - run: pip install ".[tests]" ecl-data-io
       shell: bash