diff --git a/‎lib/core/AxiosHeaders.js‎
Lines changed: 1 addition & 3 deletions b/‎lib/core/AxiosHeaders.js‎
Lines changed: 1 addition & 3 deletions
@@ -29,9 +29,7 @@ function parseTokens(str) {
   return tokens;
 }
 
-function isValidHeaderName(str) {
-  return /^[-_a-zA-Z]+$/.test(str.trim());
-}
+const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());
 
 function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {
   if (utils.isFunction(filter)) {
Original file line number	Diff line number	Diff line change
`@@ -29,9 +29,7 @@ function parseTokens(str) {`
`29`	`29`	`return tokens;`
`30`	`30`	`}`
`31`	`31`
`32`		`-function isValidHeaderName(str) {`
`33`		`- return /^[-_a-zA-Z]+$/.test(str.trim());`
`34`		`-}`
	`32`	+const isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`\|~,!#$%&'*+.]+$/.test(str.trim());
`35`	`33`
`36`	`34`	`function matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {`
`37`	`35`	`if (utils.isFunction(filter)) {`