diff --git a/package-lock.json b/package-lock.json
index 1683fed..619dd6f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "eslint": "^9.39.2",
         "sinon": "^21.1.2",
         "sinon-chrome": "^3.0.1",
-        "stylelint": "^17.8.0",
+        "stylelint": "^17.9.1",
         "stylelint-config-standard": "^40.0.0",
         "stylelint-no-unsupported-browser-features": "^8.1.1",
         "web-ext": "^10.1.0"
@@ -131,9 +131,9 @@
       }
     },
     "node_modules/@csstools/css-calc": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-3.1.1.tgz",
-      "integrity": "sha512-HJ26Z/vmsZQqs/o3a6bgKslXGFAungXGbinULZO3eMsOyNJHeBBZfup5FiZInOghgoM4Hwnmw+OgbJCNg1wwUQ==",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-3.2.0.tgz",
+      "integrity": "sha512-bR9e6o2BDB12jzN/gIbjHa5wLJ4UjD1CB9pM7ehlc0ddk6EBz+yYS1EV2MF55/HUxrHcB/hehAyt5vhsA3hx7w==",
       "dev": true,
       "funding": [
         {
@@ -10292,9 +10292,9 @@
       "dev": true
     },
     "node_modules/stylelint": {
-      "version": "17.8.0",
-      "resolved": "https://registry.npmjs.org/stylelint/-/stylelint-17.8.0.tgz",
-      "integrity": "sha512-oHkld9T60LDSaUQ4CSVc+tlt9eUoDlxhaGWShsUCKyIL14boZfmK5bSphZqx64aiC5tCqX+BsQMTMoSz8D1zIg==",
+      "version": "17.9.1",
+      "resolved": "https://registry.npmjs.org/stylelint/-/stylelint-17.9.1.tgz",
+      "integrity": "sha512-THTmnAPJTrg/JhkTWZlSyrO+HUYMx6ELthIHeMyD2WOKqXIJUFQv2Yxn91bvUrZdbBJaW2dUuQdPST2wcQ6C3g==",
       "dev": true,
       "funding": [
         {
@@ -10308,9 +10308,9 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "@csstools/css-calc": "^3.1.1",
+        "@csstools/css-calc": "^3.2.0",
         "@csstools/css-parser-algorithms": "^4.0.0",
-        "@csstools/css-syntax-patches-for-csstree": "^1.1.2",
+        "@csstools/css-syntax-patches-for-csstree": "^1.1.3",
         "@csstools/css-tokenizer": "^4.0.0",
         "@csstools/media-query-list-parser": "^5.0.0",
         "@csstools/selector-resolve-nested": "^4.0.0",
diff --git a/package.json b/package.json
index 899c275..521b827 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "eslint": "^9.39.2",
     "sinon": "^21.1.2",
     "sinon-chrome": "^3.0.1",
-    "stylelint": "^17.8.0",
+    "stylelint": "^17.9.1",
     "stylelint-config-standard": "^40.0.0",
     "stylelint-no-unsupported-browser-features": "^8.1.1",
     "web-ext": "^10.1.0"