diff --git a/extensions/css-language-features/server/package.json b/extensions/css-language-features/server/package.json
index 5ab4aec5ca2..eeb9341d76e 100644
--- a/extensions/css-language-features/server/package.json
+++ b/extensions/css-language-features/server/package.json
@@ -9,7 +9,7 @@
   },
   "main": "./out/node/cssServerMain",
   "dependencies": {
-    "vscode-css-languageservice": "^4.2.0",
+    "vscode-css-languageservice": "4.3.0-next.0",
     "vscode-languageserver": "^6.1.1",
     "vscode-uri": "^2.1.1"
   },
diff --git a/extensions/css-language-features/server/yarn.lock b/extensions/css-language-features/server/yarn.lock
index a24493198aa..b2188f181a1 100644
--- a/extensions/css-language-features/server/yarn.lock
+++ b/extensions/css-language-features/server/yarn.lock
@@ -701,10 +701,10 @@ to-regex-range@^5.0.1:
   dependencies:
     is-number "^7.0.0"
 
-vscode-css-languageservice@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/vscode-css-languageservice/-/vscode-css-languageservice-4.2.0.tgz#56081374857ce8aa4dd4c98f97e4e10a30b7242f"
-  integrity sha512-HIjl5bofrrxMMF05K/nq83270EdvteuAIio44FWd6tDdfhgg4vbofiAuXRSpXFi335f5+ekKdrzvPZm9ahqzsg==
+vscode-css-languageservice@^4.3.0-next.0:
+  version "4.3.0-next.0"
+  resolved "https://registry.yarnpkg.com/vscode-css-languageservice/-/vscode-css-languageservice-4.3.0-next.0.tgz#70ca6e192e1d7fb904867e696851b14401da9573"
+  integrity sha512-OwYavU+gqocK3YQi484CrGkGMMRRmzJdeNMfgAr/SssKJVJuvkLec7NbAopM42KTE6OPaqU3AFgI5AMERmIJ4A==
   dependencies:
     vscode-languageserver-textdocument "^1.0.1"
     vscode-languageserver-types "^3.15.1"