diff --git a/README.md b/README.md
index 5fb8ed5..a5d4ec8 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Please note that the GitHub Action downloads the recommended blocklists and whit
 - `CLOUDFLARE_ACCOUNT_ID`: Your Cloudflare account ID
 - `CLOUDFLARE_ACCOUNT_EMAIL`: Your Cloudflare account email
 - `CLOUDFLARE_LIST_ITEM_LIMIT`: The maximum number of blocked domains allowed for your Cloudflare Zero Trust plan. Use 300000 for the free plan or if you're unsure.
-- `PING_URL`: /Optional/ Your https ping URL
+- `PING_URL`: /Optional/ The HTTP(S) URL to ping (using curl) after the GitHub Action has successfully updated your filters. Useful for monitoring.
 
 
 3. Create a new file in the repository named `.github/workflows/main.yml` with the contents of `auto_update_github_action.yml` found in this repository. The default settings will update your filters every week at 3 AM UTC. You can change this by editing the `schedule` property.