diff --git a/extensions/html-language-features/server/package.json b/extensions/html-language-features/server/package.json
index e97a42ab0a6..087fbaec82b 100644
--- a/extensions/html-language-features/server/package.json
+++ b/extensions/html-language-features/server/package.json
@@ -9,12 +9,12 @@
   },
   "main": "./out/htmlServerMain",
   "dependencies": {
-    "vscode-css-languageservice": "^4.0.2",
-    "vscode-html-languageservice": "^3.0.0",
+    "vscode-css-languageservice": "^4.0.3-next.0",
+    "vscode-html-languageservice": "^3.0.3",
     "vscode-languageserver": "^5.3.0-next.8",
     "vscode-languageserver-types": "3.15.0-next.2",
     "vscode-nls": "^4.1.1",
-    "vscode-uri": "^2.0.1"
+    "vscode-uri": "^2.0.3"
   },
   "devDependencies": {
     "@types/mocha": "2.2.33",
diff --git a/extensions/html-language-features/server/src/utils/documentContext.ts b/extensions/html-language-features/server/src/utils/documentContext.ts
index bfd26d1aa8d..71f9a3591be 100644
--- a/extensions/html-language-features/server/src/utils/documentContext.ts
+++ b/extensions/html-language-features/server/src/utils/documentContext.ts
@@ -32,7 +32,12 @@ export function getDocumentContext(documentUri: string, workspaceFolders: Worksp
 					}
 				}
 			}
-			return url.resolve(base, ref);
+			try {
+				return url.resolve(base, ref);
+			} catch {
+				return undefined;
+			}
+
 		},
 	};
 }
diff --git a/extensions/html-language-features/server/yarn.lock b/extensions/html-language-features/server/yarn.lock
index 8c532e3136f..c386ce0bbb9 100644
--- a/extensions/html-language-features/server/yarn.lock
+++ b/extensions/html-language-features/server/yarn.lock
@@ -229,22 +229,23 @@ supports-color@5.4.0:
   dependencies:
     has-flag "^3.0.0"
 
-vscode-css-languageservice@^4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/vscode-css-languageservice/-/vscode-css-languageservice-4.0.2.tgz#7496e538b0c151feac16d5888cc0b1b104f4c736"
-  integrity sha512-pTnfXbsME3pl+yDfhUp/mtvPyIJk0Le4zqJxDn56s9GY9LqY0RmkSEh0oHH6D0HXR3Ni6wKosIaqu8a2G0+jdw==
+vscode-css-languageservice@^4.0.3-next.0:
+  version "4.0.3-next.0"
+  resolved "https://registry.yarnpkg.com/vscode-css-languageservice/-/vscode-css-languageservice-4.0.3-next.0.tgz#ba96894cf2a0c86c744a1274590f27e55ea60f58"
+  integrity sha512-ku58Y5jDFNfDicv2AAhgu1edgfGcRZPwlKu6EBK2ck/O/Vco7Zy64FDoClJghcYBhJiDs7sy2q/UtQD0IoGbRw==
   dependencies:
     vscode-languageserver-types "^3.15.0-next.2"
     vscode-nls "^4.1.1"
+    vscode-uri "^2.0.3"
 
-vscode-html-languageservice@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/vscode-html-languageservice/-/vscode-html-languageservice-3.0.0.tgz#b9649aa0713d68665d7546bd3772dd10e4dbe200"
-  integrity sha512-AgNyjaYrmgundh5gXP0bqCLeLdfUTyvNafF1moNwYdqeNh6DIpMG6RjwYwgtNChXSsVGXnaHiwGMtAUwMxkQUQ==
+vscode-html-languageservice@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/vscode-html-languageservice/-/vscode-html-languageservice-3.0.3.tgz#0aeae18a59000e317447ea34965f72680a2140ef"
+  integrity sha512-U+upM3gHp3HaF3wXAnUduA6IDKcz6frWS/dTAju3cZVIyZwOLBBFElQVlLH0ycHyMzqUFrjvdv+kEyPAEWfQ/g==
   dependencies:
     vscode-languageserver-types "^3.15.0-next.2"
     vscode-nls "^4.1.1"
-    vscode-uri "^2.0.1"
+    vscode-uri "^2.0.3"
 
 vscode-jsonrpc@^4.1.0-next.2:
   version "4.1.0-next.2"
@@ -288,10 +289,10 @@ vscode-uri@^1.0.6:
   resolved "https://registry.yarnpkg.com/vscode-uri/-/vscode-uri-1.0.6.tgz#6b8f141b0bbc44ad7b07e94f82f168ac7608ad4d"
   integrity sha512-sLI2L0uGov3wKVb9EB+vIQBl9tVP90nqRvxSoJ35vI3NjxE8jfsE5DSOhWgSunHSZmKS4OCi2jrtfxK7uyp2ww==
 
-vscode-uri@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/vscode-uri/-/vscode-uri-2.0.1.tgz#5448e4f77d21d93ffa34b96f84c6c5e09e3f5a9b"
-  integrity sha512-s/k0zsYr6y+tsocFyxT/+G5aq8mEdpDZuph3LZ+UmCs7LNhx/xomiCy5kyP+jOAKC7RMCUvb6JbPD1/TgAvq0g==
+vscode-uri@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/vscode-uri/-/vscode-uri-2.0.3.tgz#25e5f37f552fbee3cec7e5f80cef8469cefc6543"
+  integrity sha512-4D3DI3F4uRy09WNtDGD93H9q034OHImxiIcSq664Hq1Y1AScehlP3qqZyTkX/RWxeu0MRMHGkrxYqm2qlDF/aw==
 
 wrappy@1:
   version "1.0.2"