diff --git a/package-lock.json b/package-lock.json
index 3d663ee9f760..db47b3ed6f90 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3150,7 +3150,8 @@
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+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
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@@ -5988,11 +5989,6 @@
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diff --git a/package.json b/package.json
index 01bd75b987cd..46a6d2afe851 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
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     "object-hash": "^2.1.1",
     "parse-glob": "^3.0.4",
-    "postcss-functions": "^3",
+    "postcss-functions": "^4.0.2",
     "postcss-js": "^3.0.3",
     "postcss-nested": "5.0.5",
     "postcss-selector-parser": "^6.0.4",