diff --git a/.github/workflows/gh-ci-cron.yaml b/.github/workflows/gh-ci-cron.yaml
index 395b571e63..e0cb26464d 100644
--- a/.github/workflows/gh-ci-cron.yaml
+++ b/.github/workflows/gh-ci-cron.yaml
@@ -203,11 +203,11 @@ jobs:
 
     - name: pip install mdanalysis
       run: |
-        cd package && pip install .
+        cd package && pip install . --no-build-isolation
 
     - name: pip install mdanalysistests
       run: |
-        cd testsuite && pip install .
+        cd testsuite && pip install . --no-build-isolation
 
     - name: install_pip_extras
       run: |