diff --git a/composer.lock b/composer.lock
index 23487fa..16688f6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,7 +1,7 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
     "content-hash": "298fb01ac16da397047621688e82acf5",
@@ -2029,16 +2029,16 @@
         },
         {
             "name": "sabberworm/php-css-parser",
-            "version": "6.0.1",
+            "version": "6.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sabberworm/PHP-CSS-Parser.git",
-                "reference": "9ea4b00c569b19f731d0c2e0e802055877ff40c2"
+                "reference": "7df1f66498655db5a1cf6003f55309d394487d5f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sabberworm/PHP-CSS-Parser/zipball/9ea4b00c569b19f731d0c2e0e802055877ff40c2",
-                "reference": "9ea4b00c569b19f731d0c2e0e802055877ff40c2",
+                "url": "https://api.github.com/repos/sabberworm/PHP-CSS-Parser/zipball/7df1f66498655db5a1cf6003f55309d394487d5f",
+                "reference": "7df1f66498655db5a1cf6003f55309d394487d5f",
                 "shasum": ""
             },
             "require": {
@@ -2066,7 +2066,11 @@
                 "parser",
                 "stylesheet"
             ],
-            "time": "2015-08-24T08:48:52+00:00"
+            "support": {
+                "issues": "https://github.com/sabberworm/PHP-CSS-Parser/issues",
+                "source": "https://github.com/sabberworm/PHP-CSS-Parser/tree/6.0.2"
+            },
+            "time": "2020-06-01T09:07:27+00:00"
         },
         {
             "name": "swiftmailer/swiftmailer",
@@ -4599,5 +4603,6 @@
     "platform": {
         "php": ">=5.6.4"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.2.0"
 }