diff --git a/dist/index.js b/dist/index.js
index 77cabe3..8924c4e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -500,7 +500,9 @@ exports.stringifyUrl = function (input, options) {
   }, options);
   var url = removeHash(input.url).split('?')[0] || '';
   var queryFromUrl = exports.extract(input.url);
-  var parsedQueryFromUrl = exports.parse(queryFromUrl);
+  var parsedQueryFromUrl = exports.parse(queryFromUrl, {
+    sort: false
+  });
   var query = Object.assign(parsedQueryFromUrl, input.query);
   var queryString = exports.stringify(query, options);
 
diff --git a/index.js b/index.js
index f8ca0df..de1d7b1 100644
--- a/index.js
+++ b/index.js
@@ -361,7 +361,7 @@ exports.stringifyUrl = (input, options) => {
 
 	const url = removeHash(input.url).split('?')[0] || '';
 	const queryFromUrl = exports.extract(input.url);
-	const parsedQueryFromUrl = exports.parse(queryFromUrl);
+	const parsedQueryFromUrl = exports.parse(queryFromUrl, {sort: false});
 
 	const query = Object.assign(parsedQueryFromUrl, input.query);
 	let queryString = exports.stringify(query, options);
diff --git a/package.json b/package.json
index 2bf44d4..630fc03 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "query-string-for-all",
-	"version": "6.13.0",
+	"version": "6.13.1",
 	"description": "Parse and stringify URL query strings",
 	"license": "MIT",
 	"repository": "cdeutsch/query-string-for-all",
diff --git a/test/stringify-url.js b/test/stringify-url.js
index 98055cc..2b3c372 100644
--- a/test/stringify-url.js
+++ b/test/stringify-url.js
@@ -52,3 +52,7 @@ test('stringify URL from the result of `parseUrl` with query string that contain
 	const parsedUrl = queryString.parseUrl(url);
 	t.deepEqual(queryString.stringifyUrl(parsedUrl, {encode: false}), url);
 });
+
+test('stringify URL without sorting existing query params', t => {
+	t.deepEqual(queryString.stringifyUrl({url: 'https://foo.bar?C=3&A=1', query: {D: 4, B: 2}}, {sort: false}), 'https://foo.bar?C=3&A=1&D=4&B=2');
+});