diff --git a/build/package.json b/build/package.json
index 5de4f23887bea2c21ab237d6be414a662aacc92b..188bcf0c2f41aedae4a6e2b002ccfe1c7e6081ae 100644
--- a/build/package.json
+++ b/build/package.json
@@ -48,7 +48,7 @@
     "minimist": "^1.2.3",
     "request": "^2.85.0",
     "terser": "4.3.8",
-    "typescript": "^4.2.0-dev.20201104",
+    "typescript": "^4.2.0-dev.20201119",
     "vsce": "1.48.0",
     "vscode-telemetry-extractor": "^1.6.0",
     "xml2js": "^0.4.17"
diff --git a/build/yarn.lock b/build/yarn.lock
index bdf8fa7d994b5818c5d0e4d430cfe7a586575df5..96d7054300fd886c72719b2c39848c895e8662a8 100644
--- a/build/yarn.lock
+++ b/build/yarn.lock
@@ -3349,10 +3349,10 @@ typescript@^3.0.1:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.3.tgz#c830f657f93f1ea846819e929092f5fe5983e977"
   integrity sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==
 
-typescript@^4.2.0-dev.20201104:
-  version "4.2.0-dev.20201104"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.0-dev.20201104.tgz#9dca362fd423ac9391ef4a67bdc6f18537e9593c"
-  integrity sha512-MEnAcd0iwQySO+8F19KXGsX8WaHMda48j66I4qqUO8bknueGJUH/FdG9MakpApXd2Lzd9tlUMlOyT07dxeNsSQ==
+typescript@^4.2.0-dev.20201119:
+  version "4.2.0-dev.20201119"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.0-dev.20201119.tgz#d4a43511cd9931adac05e1a47b6425f6b0e76cc3"
+  integrity sha512-HIgv+D/0VpVYRTbcVVf9oac/0GtLKMqaufTcPgohNaFWlCOh4lq8syefANgENXTG5Q4VEC6xwDGzHW6EJAVr3A==
 
 typical@^4.0.0:
   version "4.0.0"
diff --git a/package.json b/package.json
index 29a262d3910e67f8731c39da0ba4cd1a11df1bcb..9c91d083c3ed63ceba4b1ab6a05fc50e429a3cbc 100644
--- a/package.json
+++ b/package.json
@@ -168,7 +168,7 @@
     "style-loader": "^1.0.0",
     "ts-loader": "^4.4.2",
     "tsec": "googleinterns/tsec",
-    "typescript": "^4.2.0-dev.20201104",
+    "typescript": "^4.2.0-dev.20201119",
     "typescript-formatter": "7.1.0",
     "underscore": "^1.8.2",
     "vinyl": "^2.0.0",
diff --git a/src/vs/workbench/contrib/terminal/node/terminal.ts b/src/vs/workbench/contrib/terminal/node/terminal.ts
index 8dc3b6c1533d71dddd3a87efd95d645abd81047a..4a006c386e2a53f470e98c3f34f82f2fac870f68 100644
--- a/src/vs/workbench/contrib/terminal/node/terminal.ts
+++ b/src/vs/workbench/contrib/terminal/node/terminal.ts
@@ -152,7 +152,7 @@ async function validateShellPaths(label: string, potentialPaths: string[]): Prom
 	}
 	try {
 		const result = await stat(normalize(current));
-		if (result.isFile || result.isSymbolicLink) {
+		if (result.isFile() || result.isSymbolicLink()) {
 			return {
 				label,
 				path: current
diff --git a/yarn.lock b/yarn.lock
index 061960377ea2f9951df4f662e1126b8435999c1b..a3f05fe9cb8a59f92fa28ec4f5c2a9b9981cb6c6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9296,10 +9296,10 @@ typescript@^2.6.2:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.2.tgz#3c5b6fd7f6de0914269027f03c0946758f7673a4"
   integrity sha1-PFtv1/beCRQmkCfwPAlGdY92c6Q=
 
-typescript@^4.2.0-dev.20201104:
-  version "4.2.0-dev.20201104"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.0-dev.20201104.tgz#9dca362fd423ac9391ef4a67bdc6f18537e9593c"
-  integrity sha512-MEnAcd0iwQySO+8F19KXGsX8WaHMda48j66I4qqUO8bknueGJUH/FdG9MakpApXd2Lzd9tlUMlOyT07dxeNsSQ==
+typescript@^4.2.0-dev.20201119:
+  version "4.2.0-dev.20201119"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.0-dev.20201119.tgz#d4a43511cd9931adac05e1a47b6425f6b0e76cc3"
+  integrity sha512-HIgv+D/0VpVYRTbcVVf9oac/0GtLKMqaufTcPgohNaFWlCOh4lq8syefANgENXTG5Q4VEC6xwDGzHW6EJAVr3A==
 
 uc.micro@^1.0.1, uc.micro@^1.0.3:
   version "1.0.3"