diff --git a/extensions/npm-shrinkwrap.json b/extensions/npm-shrinkwrap.json
index 68c3e372e42..b1154df9cad 100644
--- a/extensions/npm-shrinkwrap.json
+++ b/extensions/npm-shrinkwrap.json
@@ -3,9 +3,9 @@
   "version": "0.0.1",
   "dependencies": {
     "typescript": {
-      "version": "2.4.1",
-      "from": "typescript@2.4.1",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.4.1.tgz"
+      "version": "2.4.2-insiders.20170630",
+      "from": "typescript@2.4.2-insiders.20170630",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.4.2-insiders.20170630.tgz"
     }
   }
 }
diff --git a/extensions/package.json b/extensions/package.json
index 4d3369bac2c..8aabdc17ff1 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": "2.4.1"
+    "typescript": "2.4.2-insiders.20170630"
   },
   "scripts": {
     "postinstall": "node ./postinstall"