diff --git a/.github/workflows/tap-token-probe.yml b/.github/workflows/tap-token-probe.yml
index 5f8076b..00defc2 100644
--- a/.github/workflows/tap-token-probe.yml
+++ b/.github/workflows/tap-token-probe.yml
@@ -23,4 +23,6 @@ jobs:
               || echo "  read FAILED"
             GH_TOKEN="$value" gh workflow list --repo michel/homebrew-tap >/dev/null 2>&1 \
               && echo "  actions read ok" || echo "  actions read FAILED"
+            GH_TOKEN="$value" gh workflow run formula.yml --repo michel/homebrew-tap \
+              && echo "  dispatch ok" || echo "  dispatch FAILED"
           done