diff --git a/extensions/package.json b/extensions/package.json
index 0cfe62f9e6d..9060b8f63a3 100644
--- a/extensions/package.json
+++ b/extensions/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.1",
   "description": "Dependencies shared by all extensions",
   "dependencies": {
-    "typescript": "3.1.0-insiders.20180920"
+    "typescript": "3.1.1-insiders.20180925"
   },
   "scripts": {
     "postinstall": "node ./postinstall"
diff --git a/extensions/yarn.lock b/extensions/yarn.lock
index 53dfdf625c7..d939b809d85 100644
--- a/extensions/yarn.lock
+++ b/extensions/yarn.lock
@@ -2,6 +2,6 @@
 # yarn lockfile v1
 
 
-typescript@3.1.0-insiders.20180920:
-  version "3.1.0-insiders.20180920"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.0-insiders.20180920.tgz#c113741f3f701aad6f14170d4a03820005bcf3e9"
+typescript@3.1.1-insiders.20180925:
+  version "3.1.1-insiders.20180925"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.1-insiders.20180925.tgz#29822d0b44999c36418ea7bbdfc633106e5cff63"