diff --git a/eslint.config.mjs b/eslint.config.mjs
index 07cb66e14..e574a7d5d 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -117,6 +117,7 @@ export default [
             "web",
             "fluent-bundle",
             "fluent-dom",
+            "postcss-values-parser",
             // See https://github.com/firebase/firebase-admin-node/discussions/1359.
             "eslint-plugin-perfectionist",
           ],
diff --git a/external/stylelint/no-unused-custom-properties.mjs b/external/stylelint/no-unused-custom-properties.mjs
index 135b5e68d..39a31d269 100644
--- a/external/stylelint/no-unused-custom-properties.mjs
+++ b/external/stylelint/no-unused-custom-properties.mjs
@@ -13,8 +13,6 @@
  * limitations under the License.
  */
 
-// TODO: Remove the exception below once someone figures out how to fix it.
-// eslint-disable-next-line import/no-unresolved
 import { parse, registerWalkers, Root } from "postcss-values-parser";
 import { isString } from "stylelint/lib/utils/validateTypes.mjs";
 import stylelint from "stylelint";