diff --git a/docs/index.md b/docs/index.md
index 428c50f725..88ac5f9c61 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -64,3 +64,4 @@ resource "cloudflare_page_rule" "www" {
 - `min_backoff` (Number) Minimum backoff period in seconds after failed API calls. Alternatively, can be configured using the `CLOUDFLARE_MIN_BACKOFF` environment variable.
 - `retries` (Number) Maximum number of retries to perform when an API request fails. Alternatively, can be configured using the `CLOUDFLARE_RETRIES` environment variable.
 - `rps` (Number) RPS limit to apply when making calls to the API. Alternatively, can be configured using the `CLOUDFLARE_RPS` environment variable.
+- `user_agent_operator_suffix` (String) A value to append to the HTTP User Agent for all API calls. This value is not something most users need to modify however, if you are using a non-standard provider or operator configuration, this is recommended to assist in uniquely identifying your traffic. **Setting this value will remove the Terraform version from the HTTP User Agent string and may have unintended consequences**. Alternatively, can be configured using the `CLOUDFLARE_USER_AGENT_OPERATOR_SUFFIX` environment variable.