diff --git a/src/Linkifier.ts b/src/Linkifier.ts
index e0f5eb92..7a813733 100644
--- a/src/Linkifier.ts
+++ b/src/Linkifier.ts
@@ -12,8 +12,9 @@ const negatedDomainCharacterSet = '[^\\da-z\\.-]+';
 const domainBodyClause = '(' + domainCharacterSet + ')';
 const tldClause = '([a-z\\.]{2,6})';
 const ipClause = '((\\d{1,3}\\.){3}\\d{1,3})';
+const localHostClause = '(localhost)';
 const portClause = '(:\\d{1,5})';
-const hostClause = '((' + domainBodyClause + '\\.' + tldClause + ')|' + ipClause + ')' + portClause + '?';
+const hostClause = '((' + domainBodyClause + '\\.' + tldClause + ')|' + ipClause + '|' + localHostClause + ')' + portClause + '?';
 const pathClause = '(\\/[\\/\\w\\.-]*)*';
 const queryStringClause = '(\\?[\\w\\[\\]\\(\\)\\/\\?\\!#@$&\'*+,:;]*)?';
 const negatedPathCharacterSet = '[^\\/\\w\\.-]+';