diff --git a/build/package.json b/build/package.json
index 4c9fb7ddf09..bfb74bd3ee6 100644
--- a/build/package.json
+++ b/build/package.json
@@ -61,7 +61,7 @@
     "plist": "^3.0.1",
     "source-map": "0.6.1",
     "tmp": "^0.2.1",
-    "typescript": "^4.5.0-dev.20210830",
+    "typescript": "4.5.0-dev.20210816",
     "vsce": "1.48.0",
     "vscode-universal-bundler": "^0.0.2"
   },
diff --git a/build/yarn.lock b/build/yarn.lock
index 6f6516a0bc8..0d83f8a23b7 100644
--- a/build/yarn.lock
+++ b/build/yarn.lock
@@ -2348,10 +2348,10 @@ typed-rest-client@^0.9.0:
     tunnel "0.0.4"
     underscore "1.8.3"
 
-typescript@^4.5.0-dev.20210830:
-  version "4.5.0-dev.20210830"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.0-dev.20210830.tgz#aeaac505077f3a8d1de198ac538daac819b0438e"
-  integrity sha512-y+dKpgTs8oqPDRorq0+0AsgZFXLX+6/YU0qea5XAaIzFbumNFv2DDPOiSF8ozJ7y/YSvd+cyvyZtS5bK+3YtnA==
+typescript@4.5.0-dev.20210816:
+  version "4.5.0-dev.20210816"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.0-dev.20210816.tgz#f167cf37ead5c2400ae3744c8b0276602d2e0e54"
+  integrity sha512-j+NYwIY9VVIL5heN1piEzX5/bIBwuiRWlP7mNTP5f3uItzIwwGMVoFAWkhIgDik3F4qvGcE49EnWIV5slbHohA==
 
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.5"
diff --git a/package.json b/package.json
index f80146ffbb9..c18d80ca4ba 100644
--- a/package.json
+++ b/package.json
@@ -198,7 +198,7 @@
     "style-loader": "^1.0.0",
     "ts-loader": "^9.2.3",
     "tsec": "0.1.4",
-    "typescript": "^4.5.0-dev.20210830",
+    "typescript": "4.5.0-dev.20210816",
     "typescript-formatter": "7.1.0",
     "underscore": "^1.12.1",
     "util": "^0.12.4",
diff --git a/yarn.lock b/yarn.lock
index e80135fd8e3..d8918064be4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10231,16 +10231,16 @@ typescript-formatter@7.1.0:
     commandpost "^1.0.0"
     editorconfig "^0.15.0"
 
+typescript@4.5.0-dev.20210816:
+  version "4.5.0-dev.20210816"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.0-dev.20210816.tgz#f167cf37ead5c2400ae3744c8b0276602d2e0e54"
+  integrity sha512-j+NYwIY9VVIL5heN1piEzX5/bIBwuiRWlP7mNTP5f3uItzIwwGMVoFAWkhIgDik3F4qvGcE49EnWIV5slbHohA==
+
 typescript@^2.6.2:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.2.tgz#3c5b6fd7f6de0914269027f03c0946758f7673a4"
   integrity sha1-PFtv1/beCRQmkCfwPAlGdY92c6Q=
 
-typescript@^4.5.0-dev.20210830:
-  version "4.5.0-dev.20210830"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.0-dev.20210830.tgz#aeaac505077f3a8d1de198ac538daac819b0438e"
-  integrity sha512-y+dKpgTs8oqPDRorq0+0AsgZFXLX+6/YU0qea5XAaIzFbumNFv2DDPOiSF8ozJ7y/YSvd+cyvyZtS5bK+3YtnA==
-
 typical@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/typical/-/typical-4.0.0.tgz#cbeaff3b9d7ae1e2bbfaf5a4e6f11eccfde94fc4"