diff --git a/.github/workflows/verify_e2e-linux.yml b/.github/workflows/verify_e2e-linux.yml
index 41ae7c06d0..1b98f8ec9a 100644
--- a/.github/workflows/verify_e2e-linux.yml
+++ b/.github/workflows/verify_e2e-linux.yml
@@ -66,6 +66,8 @@ jobs:
 
       - run: yarn tsc
       - run: yarn backstage-cli repo build
+        # BUI has a custom build script and needs to be built separately
+      - run: yarn --cwd packages/ui build
       - name: run E2E test
         run: |
           sudo sysctl fs.inotify.max_user_watches=524288
diff --git a/.github/workflows/verify_e2e-windows.yml b/.github/workflows/verify_e2e-windows.yml
index 561963cc05..773d7d89f0 100644
--- a/.github/workflows/verify_e2e-windows.yml
+++ b/.github/workflows/verify_e2e-windows.yml
@@ -86,6 +86,8 @@ jobs:
 
       - run: yarn tsc
       - run: yarn backstage-cli repo build
+        # BUI has a custom build script and needs to be built separately
+      - run: yarn --cwd packages/ui build
       - name: run E2E test
         run: yarn e2e-test run
         env: