diff --git a/package.json b/package.json
index 2d9b8c2438d5..7e2a1c39ff43 100644
--- a/package.json
+++ b/package.json
@@ -15,19 +15,19 @@
 	},
 	"bugs": {
 		"url": "https://github.com/Microsoft/vscode-python/issues"
-    },
-    "badges": [
-        {
-            "url": "https://travis-ci.org/Microsoft/vscode-python.svg?branch=master",
-            "href": "https://travis-ci.org/Microsoft/vscode-python",
-            "description": "Continuous integration"
-        },
-        {
-            "url": "https://codecov.io/gh/Microsoft/vscode-python/branch/master/graph/badge.svg",
-            "href": "https://codecov.io/gh/Microsoft/vscode-python",
-            "description": "Test coverage"
-        }
-    ],
+	},
+	"badges": [
+		{
+			"url": "https://travis-ci.org/Microsoft/vscode-python.svg?branch=master",
+			"href": "https://travis-ci.org/Microsoft/vscode-python",
+			"description": "Continuous integration"
+		},
+		{
+			"url": "https://codecov.io/gh/Microsoft/vscode-python/branch/master/graph/badge.svg",
+			"href": "https://codecov.io/gh/Microsoft/vscode-python",
+			"description": "Test coverage"
+		}
+	],
 	"icon": "icon.png",
 	"galleryBanner": {
 		"color": "#1e415e",
@@ -1562,7 +1562,7 @@
 		"minimatch": "^3.0.3",
 		"named-js-regexp": "^1.3.1",
 		"opn": "^5.1.0",
-		"reflect-metadata": "^0.1.10",
+		"reflect-metadata": "^0.1.12",
 		"rxjs": "^5.5.2",
 		"semver": "^5.4.1",
 		"sudo-prompt": "^8.0.0",
diff --git a/yarn.lock b/yarn.lock
index 7ddcf152a511..48cfc8fe0c7c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -603,6 +603,10 @@ ci-info@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.1.2.tgz#03561259db48d0474c8bdc90f5b47b068b6bbfb4"
 
+circular-json@^0.3.1:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
+
 class-utils@^0.3.5:
   version "0.3.5"
   resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.5.tgz#17e793103750f9627b2176ea34cfd1b565903c80"
@@ -2161,6 +2165,10 @@ is-windows@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.1.tgz#310db70f742d259a16a369202b51af84233310d9"
 
+is-wsl@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-1.1.0.tgz#1f16e4aa22b04d1336b66188a66af3c600c3a66d"
+
 is@^3.1.0:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/is/-/is-3.2.1.tgz#d0ac2ad55eb7b0bec926a5266f6c662aaa83dca5"
@@ -3015,6 +3023,12 @@ once@~1.3.0:
   dependencies:
     wrappy "1"
 
+opn@^5.1.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/opn/-/opn-5.2.0.tgz#71fdf934d6827d676cecbea1531f95d354641225"
+  dependencies:
+    is-wsl "^1.1.0"
+
 optimist@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
@@ -3202,6 +3216,10 @@ posix-character-classes@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
 
+postinstall-build@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/postinstall-build/-/postinstall-build-5.0.1.tgz#b917a9079b26178d9a24af5a5cd8cb4a991d11b9"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -3352,9 +3370,9 @@ redent@^1.0.0:
     indent-string "^2.1.0"
     strip-indent "^1.0.1"
 
-reflect-metadata@^0.1.10:
-  version "0.1.10"
-  resolved "https://registry.yarnpkg.com/reflect-metadata/-/reflect-metadata-0.1.10.tgz#b4f83704416acad89988c9b15635d47e03b9344a"
+reflect-metadata@^0.1.12:
+  version "0.1.12"
+  resolved "https://registry.yarnpkg.com/reflect-metadata/-/reflect-metadata-0.1.12.tgz#311bf0c6b63cd782f228a81abe146a2bfa9c56f2"
 
 regex-cache@^0.4.2:
   version "0.4.4"
@@ -3869,6 +3887,10 @@ strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
+sudo-prompt@^8.0.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/sudo-prompt/-/sudo-prompt-8.1.0.tgz#62dce8013b80dd242e5b6ca15d8b8cffb7c85472"
+
 supports-color@1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-1.2.0.tgz#ff1ed1e61169d06b3cf2d588e188b18d8847e17e"
@@ -4096,6 +4118,14 @@ type-detect@^4.0.0:
   version "4.0.5"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.5.tgz#d70e5bc81db6de2a381bcaca0c6e0cbdc7635de2"
 
+typemoq@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/typemoq/-/typemoq-2.1.0.tgz#4452ce360d92cf2a1a180f0c29de2803f87af1e8"
+  dependencies:
+    circular-json "^0.3.1"
+    lodash "^4.17.4"
+    postinstall-build "^5.0.1"
+
 typescript-char@^0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/typescript-char/-/typescript-char-0.0.0.tgz#558feda737c765a610b737eefbb1775ee9bc8dab"