diff --git a/extensions/package.json b/extensions/package.json
index 1c7d369b234..51de041b453 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": "3.5.0-dev.20190514"
+    "typescript": "3.5.0-dev.20190515"
   },
   "scripts": {
     "postinstall": "node ./postinstall"
diff --git a/extensions/yarn.lock b/extensions/yarn.lock
index 33a730f9993..19e80f8a8fe 100644
--- a/extensions/yarn.lock
+++ b/extensions/yarn.lock
@@ -2,7 +2,7 @@
 # yarn lockfile v1
 
 
-typescript@3.5.0-dev.20190514:
-  version "3.5.0-dev.20190514"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.0-dev.20190514.tgz#f791a398f2b57cc514434726f690da68144ee73c"
-  integrity sha512-XFEpXv7n2nnYek4SaL09QcN8JnxwVplaPKPquPO12qc9okhN7Afmiu54LT1WP/6RmcXRFma1QKrr8Kfj1nLxYA==
+typescript@3.5.0-dev.20190515:
+  version "3.5.0-dev.20190515"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.0-dev.20190515.tgz#e34d9f4ae5352ecbb7bbc2f67db6cef3d5f7d58e"
+  integrity sha512-pE5yxFLdt5gT8PEX1Ra7vWU6HCdo4039be182oeWk8PTBWCWqr/XxlTjRxWfYgycNrI1vMjOux+n2y0aFJ9eUg==