diff --git a/.ci/scripts/test_backend.sh b/.ci/scripts/test_backend.sh
index ba5df5c3fe3..a48cc9ec41a 100755
--- a/.ci/scripts/test_backend.sh
+++ b/.ci/scripts/test_backend.sh
@@ -59,6 +59,7 @@ fi
 if [[ "$FLOW" == *arm* ]]; then
     # Setup ARM deps.
     .ci/scripts/setup-arm-baremetal-tools.sh
+    source examples/arm/ethos-u-scratch/setup_path.sh
 
     if [[ "$FLOW" == *ethos_u* ]]; then
         # Prepare a test runner binary that can run on the Corstone-3x0 FVPs
diff --git a/.github/workflows/test-backend-arm.yml b/.github/workflows/test-backend-arm.yml
index 428e3fd1239..22e3d524f6b 100644
--- a/.github/workflows/test-backend-arm.yml
+++ b/.github/workflows/test-backend-arm.yml
@@ -12,6 +12,9 @@ on:
     paths:
       - .github/workflows/test-backend-arm.yml
       - .github/workflows/_test_backend.yml
+      - .ci/scripts/test_backend.sh
+      - backends/test/suite/flow.py
+      - backends/test/suite/flows/arm.py
   workflow_dispatch:
 
 concurrency: