diff --git a/extensions/css-language-features/.vscodeignore b/extensions/css-language-features/.vscodeignore
index a08d9b8dec7..cb289831f7b 100644
--- a/extensions/css-language-features/.vscodeignore
+++ b/extensions/css-language-features/.vscodeignore
@@ -13,6 +13,7 @@ server/bin/**
 server/build/**
 server/yarn.lock
 server/.npmignore
+polyfills/**
 yarn.lock
 server/extension.webpack.config.js
 extension.webpack.config.js
diff --git a/extensions/github-authentication/.vscodeignore b/extensions/github-authentication/.vscodeignore
index ee85b884502..c18ded867b6 100644
--- a/extensions/github-authentication/.vscodeignore
+++ b/extensions/github-authentication/.vscodeignore
@@ -2,6 +2,7 @@ src/**
 !src/common/config.json
 out/**
 build/**
+polyfills/**
 extension.webpack.config.js
 tsconfig.json
 yarn.lock
diff --git a/extensions/markdown-language-features/.vscodeignore b/extensions/markdown-language-features/.vscodeignore
index bcb886a094d..8a878732f3e 100644
--- a/extensions/markdown-language-features/.vscodeignore
+++ b/extensions/markdown-language-features/.vscodeignore
@@ -3,6 +3,7 @@ src/**
 tsconfig.json
 out/test/**
 out/**
+polyfills/**
 extension.webpack.config.js
 extension-browser.webpack.config.js
 cgmanifest.json