diff --git a/docs/cmdline-opts/noproxy.md b/docs/cmdline-opts/noproxy.md
index 698549e155..10b74ecbf4 100644
--- a/docs/cmdline-opts/noproxy.md
+++ b/docs/cmdline-opts/noproxy.md
@@ -22,6 +22,9 @@ as either a domain which contains the hostname, or the hostname itself. For
 example, `local.com` would match `local.com`, `local.com:80`, and
 `www.local.com`, but not `www.notlocal.com`.
 
+To use international hostnames in this list, add the punycode version of the
+hostname.
+
 This option overrides the environment variables that disable the proxy
 (`no_proxy` and `NO_PROXY`) (added in 7.53.0). If there is an environment
 variable disabling a proxy, you can set the no proxy list to "" to override
diff --git a/docs/libcurl/opts/CURLOPT_NOPROXY.md b/docs/libcurl/opts/CURLOPT_NOPROXY.md
index 5e8fdb1959..087a49f5b9 100644
--- a/docs/libcurl/opts/CURLOPT_NOPROXY.md
+++ b/docs/libcurl/opts/CURLOPT_NOPROXY.md
@@ -48,6 +48,9 @@ appended slash and number specifies the number of "network bits" out of the
 address to use in the comparison. For example "192.168.0.0/16" would match all
 addresses starting with "192.168".
 
+To use international hostnames in this list, add the punycode version of the
+hostname.
+
 The application does not have to keep the string around after setting this
 option.