diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 82a9fd99a..adf156e71 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,9 @@ on:
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
+env:
+  SETUPTOOLS_ENABLE_FEATURES: "legacy-editable"
+
 jobs:
   test-linux:
     runs-on: ubuntu-20.04