diff --git a/package.json b/package.json
index 1fa698703..c28f0107d 100644
--- a/package.json
+++ b/package.json
@@ -66,25 +66,6 @@
       "node_modules/fbjs/lib/someObject.js",
       "node_modules/fbjs/lib/sprintf.js",
       "node_modules/fbjs/lib/xhrSimpleDataSerializer.js",
-      "downstream/core/CSSCore.js",
-      "downstream/core/TouchEventUtils.js",
-      "downstream/core/camelize.js",
-      "downstream/core/createArrayFromMixed.js",
-      "downstream/core/createNodesFromMarkup.js",
-      "downstream/core/dom/containsNode.js",
-      "downstream/core/dom/focusNode.js",
-      "downstream/core/dom/getActiveElement.js",
-      "downstream/core/dom/getUnboundedScrollPosition.js",
-      "downstream/core/dom/isNode.js",
-      "downstream/core/dom/isTextNode.js",
-      "downstream/core/emptyFunction.js",
-      "downstream/core/emptyObject.js",
-      "downstream/core/getMarkupWrap.js",
-      "downstream/core/hyphenate.js",
-      "downstream/core/hyphenateStyleName.js",
-      "downstream/core/invariant.js",
-      "downstream/core/nativeRequestAnimationFrame.js",
-      "downstream/core/toArray.js",
       "node_modules/jest-cli",
       "node_modules/react/dist",
       "node_modules/fbjs/.*/__mocks__/",
diff --git a/packager/blacklist.js b/packager/blacklist.js
index d9a357d67..3bd6276c7 100644
--- a/packager/blacklist.js
+++ b/packager/blacklist.js
@@ -15,8 +15,6 @@ var path = require('path');
 var sharedBlacklist = [
   /node_modules[/\\]react[/\\]dist[/\\].*/,
 
-  'downstream/core/invariant.js',
-
   /website\/node_modules\/.*/,
 
   // TODO(jkassens, #9876132): Remove this rule when it's no longer needed.