diff --git a/extensions/package.json b/extensions/package.json
index 848eaa085f2..656a2a688d5 100644
--- a/extensions/package.json
+++ b/extensions/package.json
@@ -4,7 +4,7 @@
   "license": "MIT",
   "description": "Dependencies shared by all extensions",
   "dependencies": {
-    "typescript": "4.4.3"
+    "typescript": "^4.5.0-dev.20211029"
   },
   "scripts": {
     "postinstall": "node ./postinstall"
diff --git a/extensions/typescript-language-features/src/languageFeatures/fileConfigurationManager.ts b/extensions/typescript-language-features/src/languageFeatures/fileConfigurationManager.ts
index 3166e983307..ebd2136bd05 100644
--- a/extensions/typescript-language-features/src/languageFeatures/fileConfigurationManager.ts
+++ b/extensions/typescript-language-features/src/languageFeatures/fileConfigurationManager.ts
@@ -191,7 +191,6 @@ export default class FileConfigurationManager extends Disposable {
 			quotePreference: this.getQuoteStylePreference(preferencesConfig),
 			importModuleSpecifierPreference: getImportModuleSpecifierPreference(preferencesConfig),
 			importModuleSpecifierEnding: getImportModuleSpecifierEndingPreference(preferencesConfig),
-			// @ts-expect-error until TS 4.5 protocol update
 			jsxAttributeCompletionStyle: getJsxAttributeCompletionStyle(preferencesConfig),
 			allowTextChangesInNewFiles: document.uri.scheme === fileSchemes.file,
 			providePrefixAndSuffixTextForRename: preferencesConfig.get<boolean>('renameShorthandProperties', true) === false ? false : preferencesConfig.get<boolean>('useAliasesForRenames', true),
diff --git a/extensions/yarn.lock b/extensions/yarn.lock
index 30acf6771da..98f0d057758 100644
--- a/extensions/yarn.lock
+++ b/extensions/yarn.lock
@@ -24,10 +24,10 @@ fast-plist@0.1.2:
   resolved "https://registry.yarnpkg.com/fast-plist/-/fast-plist-0.1.2.tgz#a45aff345196006d406ca6cdcd05f69051ef35b8"
   integrity sha1-pFr/NFGWAG1AbKbNzQX2kFHvNbg=
 
-typescript@4.4.3:
-  version "4.4.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.4.3.tgz#bdc5407caa2b109efd4f82fe130656f977a29324"
-  integrity sha512-4xfscpisVgqqDfPaJo5vkd+Qd/ItkoagnHpufr+i2QCHBsNYp+G7UAoyFl8aPtx879u38wPV65rZ8qbGZijalA==
+typescript@^4.5.0-dev.20211029:
+  version "4.5.0-dev.20211029"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.0-dev.20211029.tgz#ec4619ab136bd70ddd9ec1a7c18783b7ce9990a3"
+  integrity sha512-N+2wLMbTq+jQmad78i4wKBGcXudBFWy+QdV1Xu9cx+F5Xi6hubBotFEzS7zA7G1Eevy6NJwlsNy0G8ok2GQ9nw==
 
 vscode-grammar-updater@^1.0.3:
   version "1.0.3"