diff --git a/package-lock.json b/package-lock.json
index 603281a..77957b1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "2.0.0-beta.0",
       "license": "MIT",
       "dependencies": {
-        "css-tree": "^2.0.4"
+        "css-tree": "^2.1.0"
       },
       "devDependencies": {
         "esbuild": "^0.14.5",
@@ -222,11 +222,11 @@
       "dev": true
     },
     "node_modules/css-tree": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.0.4.tgz",
-      "integrity": "sha512-b4IS9ZUMtGBiNjzYbcj9JhYbyei99R3ai2CSxlu8GQDnoPA/P+NU85hAm0eKDc/Zp660rpK6tFJQ2OSdacMHVg==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.1.0.tgz",
+      "integrity": "sha512-PcysZRzToBbrpoUrZ9qfblRIRf8zbEAkU0AIpQFtgkFK0vSbzOmBCvdSAx2Zg7Xx5wiYJKUKk0NMP7kxevie/A==",
       "dependencies": {
-        "mdn-data": "2.0.23",
+        "mdn-data": "2.0.27",
         "source-map-js": "^1.0.1"
       },
       "engines": {
@@ -918,9 +918,9 @@
       }
     },
     "node_modules/mdn-data": {
-      "version": "2.0.23",
-      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.23.tgz",
-      "integrity": "sha512-IonVb7pfla2U4zW8rc7XGrtgq11BvYeCxWN8HS+KFBnLDE7XDK9AAMVhRuG6fj9BBsjc69Fqsp6WEActEdNTDQ=="
+      "version": "2.0.27",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.27.tgz",
+      "integrity": "sha512-kwqO0I0jtWr25KcfLm9pia8vLZ8qoAKhWZuZMbneJq3jjBD3gl5nZs8l8Tu3ZBlBAHVQtDur9rdDGyvtfVraHQ=="
     },
     "node_modules/minimatch": {
       "version": "3.0.4",
@@ -1503,11 +1503,11 @@
       "dev": true
     },
     "css-tree": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.0.4.tgz",
-      "integrity": "sha512-b4IS9ZUMtGBiNjzYbcj9JhYbyei99R3ai2CSxlu8GQDnoPA/P+NU85hAm0eKDc/Zp660rpK6tFJQ2OSdacMHVg==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.1.0.tgz",
+      "integrity": "sha512-PcysZRzToBbrpoUrZ9qfblRIRf8zbEAkU0AIpQFtgkFK0vSbzOmBCvdSAx2Zg7Xx5wiYJKUKk0NMP7kxevie/A==",
       "requires": {
-        "mdn-data": "2.0.23",
+        "mdn-data": "2.0.27",
         "source-map-js": "^1.0.1"
       }
     },
@@ -1911,9 +1911,9 @@
       }
     },
     "mdn-data": {
-      "version": "2.0.23",
-      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.23.tgz",
-      "integrity": "sha512-IonVb7pfla2U4zW8rc7XGrtgq11BvYeCxWN8HS+KFBnLDE7XDK9AAMVhRuG6fj9BBsjc69Fqsp6WEActEdNTDQ=="
+      "version": "2.0.27",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.27.tgz",
+      "integrity": "sha512-kwqO0I0jtWr25KcfLm9pia8vLZ8qoAKhWZuZMbneJq3jjBD3gl5nZs8l8Tu3ZBlBAHVQtDur9rdDGyvtfVraHQ=="
     },
     "minimatch": {
       "version": "3.0.4",
diff --git a/package.json b/package.json
index 194610f..2523510 100644
--- a/package.json
+++ b/package.json
@@ -51,6 +51,6 @@
     "semver": "^7.3.5"
   },
   "dependencies": {
-    "css-tree": "^2.0.4"
+    "css-tree": "^2.1.0"
   }
 }