diff --git a/docs/cmdline-opts/retry.d b/docs/cmdline-opts/retry.d
index 461b9a3e6..bff0ef226 100644
--- a/docs/cmdline-opts/retry.d
+++ b/docs/cmdline-opts/retry.d
@@ -7,7 +7,8 @@ Category: curl
 If a transient error is returned when curl tries to perform a transfer, it
 will retry this number of times before giving up. Setting the number to 0
 makes curl do no retries (which is the default). Transient error means either:
-a timeout, an FTP 4xx response code or an HTTP 408, 429 or 5xx response code.
+a timeout, an FTP 4xx response code or an HTTP 408, 429, 500, 502, 503 or 504
+response code.
 
 When curl is about to retry a transfer, it will first wait one second and then
 for all forthcoming retries it will double the waiting time until it reaches