diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 4fcb6f0..7e14169 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -23,7 +23,7 @@ jobs:
           export DEB_PYTHON_INSTALL_LAYOUT=deb_system
 
           # Install Manta, with optional dev-only dependencies
-          python3 -m pip install ".[dev]"
+          python3 -m pip install -e ".[dev]"
 
       - name: Run pre-commit against all files
         run: |