diff --git a/css/package-lock.json b/css/package-lock.json
index 70b7d75..ecc8fde 100644
--- a/css/package-lock.json
+++ b/css/package-lock.json
@@ -291,9 +291,9 @@
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         },
         "extend": {
-            "version": "3.0.1",
-            "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
-            "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
+            "version": "3.0.2",
+            "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+            "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
             "optional": true
         },
         "extsprintf": {