diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index 8bb57fd..45d4082 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -28,9 +28,12 @@ jobs:
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
 
-      # Debugging cache miss issue (#16) — check whether ACTIONS_CACHE_URL is injected
+      # Debugging cache miss issue (#16) — check whether ACTIONS_CACHE_URL is injected and reachable
       - name: Debug cache env
-        run: echo "ACTIONS_CACHE_URL=${ACTIONS_CACHE_URL}" && env | grep -i cache || true
+        run: |
+          echo "ACTIONS_CACHE_URL=${ACTIONS_CACHE_URL}"
+          env | grep -i cache || true
+          curl -v --max-time 5 "${ACTIONS_CACHE_URL}" || echo "CURL FAILED: $?"
 
       - name: Cache PHP installation
         uses: https://data.forgejo.org/actions/cache@v4