diff --git a/.github/workflows/external_rc.yml b/.github/workflows/external_rc.yml
index 0d44e17..8712687 100644
--- a/.github/workflows/external_rc.yml
+++ b/.github/workflows/external_rc.yml
@@ -24,9 +24,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install standard dependencies
-      run: |
-        pip install -r requirements.txt
-        pip install -r test_requirements.txt
+      run: pip install .[test]
 
     - name: Install RC dependency
       run: pip install -i https://test.pypi.org/simple/  --extra-index-url https://pypi.org/simple/ ${{ matrix.rc-package }}