diff --git a/packages/fetch/src/headers.js b/packages/fetch/src/headers.js
index c06acab..86ae2aa 100644
--- a/packages/fetch/src/headers.js
+++ b/packages/fetch/src/headers.js
@@ -15,7 +15,7 @@ const validators = (http)
  * @param {string} name
  */
 const validateHeaderName = name => {
-	if (!/^[\^`\-\w!#$%&'*+.|~]+$/.test(name)) {
+	if (!/^[\^`\-\w!#$%&'*+.|~:]+$/.test(name)) {
 		const err = new TypeError(`Header name must be a valid HTTP token [${name}]`);
 		Object.defineProperty(err, 'code', {value: 'ERR_INVALID_HTTP_TOKEN'});
 		throw err;