diff --git a/.github/workflows/pull-request-validation.yml b/.github/workflows/pull-request-validation.yml
index a8b5df3918..e02bcf6936 100644
--- a/.github/workflows/pull-request-validation.yml
+++ b/.github/workflows/pull-request-validation.yml
@@ -97,6 +97,9 @@ jobs:
 
       - run: npm clean-install
 
+      - run: npm clean-install
+        working-directory: ./packages/test/harness/
+
       - run: npm run bootstrap
 
       - run: npm run build --if-present