diff --git a/.changeset/fair-dolphins-type.md b/.changeset/fair-dolphins-type.md
new file mode 100644
index 0000000..076be14
--- /dev/null
+++ b/.changeset/fair-dolphins-type.md
@@ -0,0 +1,5 @@
+---
+"@acemir/cssom": patch
+---
+
+fix: selectors starting with hyphen
diff --git a/lib/parse.js b/lib/parse.js
index 09d4ade..d11ecb9 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -925,14 +925,14 @@ CSSOM.parse = function parse(token, opts, errorHandler) {
 				}
 			}
 			// Match type selector with optional namespace: [namespace|]identifier
-			else if (i < len && (isIdentStart(selector[i]) || selector[i] === '\\' || selector[i] === '*' || selector[i] === '|')) {
+			else if (i < len && (isIdentStart(selector[i]) || selector[i] === '\\' || selector[i] === '*' || selector[i] === '|' || selector[i] === '-')) {
 				parseNamespace(); // Optional namespace prefix
 
 				if (i < len && selector[i] === '*') {
 					i++; // Universal selector
 					hasMatchedComponent = true;
 					matched = true;
-				} else if (i < len && (isIdentStart(selector[i]) || selector[i] === '\\')) {
+				} else if (i < len && (isIdentStart(selector[i]) || selector[i] === '\\' || selector[i] === '-')) {
 					if (parseIdentifier()) {
 						hasMatchedComponent = true;
 						matched = true;
@@ -2054,7 +2054,7 @@ CSSOM.parse = function parse(token, opts, errorHandler) {
 
 	// Helper functions to check character types
 	function isSelectorStartChar(char) {
-		return '.:#&*['.indexOf(char) !== -1;
+		return '.:#&*[\\'.indexOf(char) !== -1;
 	}
 
 	function isWhitespaceChar(char) {
diff --git a/spec/parse.spec.js b/spec/parse.spec.js
index 50e66a4..d2c3246 100644
--- a/spec/parse.spec.js
+++ b/spec/parse.spec.js
@@ -4333,6 +4333,54 @@ var VALIDATION_TESTS = [
 			return result;
 		})()
 	},
+	{
+		input: "-test {} \\-test {} --test {} \\--test {}",
+		result: (function() {
+			var result = {
+				cssRules: [
+					{
+							cssRules: [],
+							selectorText: "-test",
+							style: {
+								length: 0
+							},
+							parentRule: null,
+					},
+					{
+						cssRules: [],
+						selectorText: "-test",
+						style: {
+							length: 0
+						},
+						parentRule: null,
+					},
+					{
+						cssRules: [],
+						selectorText: "--test",
+						style: {
+							length: 0
+						},
+						parentRule: null,
+					},
+					{
+						cssRules: [],
+						selectorText: "--test",
+						style: {
+							length: 0
+						},
+						parentRule: null,
+					}
+				],
+				parentStyleSheet: null
+			};
+			result.cssRules[0].parentStyleSheet = result.cssRules[1].parentStyleSheet = result.cssRules[2].parentStyleSheet = result.cssRules[3].parentStyleSheet = result;
+			result.cssRules[0].style.parentRule = result.cssRules[0];
+			result.cssRules[1].style.parentRule = result.cssRules[1];
+			result.cssRules[2].style.parentRule = result.cssRules[2];
+			result.cssRules[3].style.parentRule = result.cssRules[3];
+			return result;
+		})()
+	}
 ];
 
 function itParse(input, result) {