diff --git a/.github/workflows/openconcept.yaml b/.github/workflows/openconcept.yaml
index 96ba2b3b..b29de394 100644
--- a/.github/workflows/openconcept.yaml
+++ b/.github/workflows/openconcept.yaml
@@ -56,8 +56,8 @@ jobs:
       run: |
         conda config --set always_yes yes
         python -m pip install pip==${{ matrix.PIP_VERSION_OLDEST }} setuptools==${{ matrix.SETUPTOOLS_VERSION_OLDEST }} --upgrade wheel
-        conda install -c conda-forge numpy=${{ matrix.NUMPY_VERSION_OLDEST }}
-        pip install scipy==${{ matrix.SCIPY_VERSION_OLDEST }} om-pycycle
+        conda install -c conda-forge numpy=${{ matrix.NUMPY_VERSION_OLDEST }} scipy=${{ matrix.SCIPY_VERSION_OLDEST }}
+        pip install om-pycycle
     - name: Install dependencies (latest versions)
       if: ${{ matrix.dep-versions == 'latest' }}
       run: |