diff --git a/Formula/twilio.rb b/Formula/twilio.rb
index 8a2b110..3879873 100644
--- a/Formula/twilio.rb
+++ b/Formula/twilio.rb
@@ -3,9 +3,9 @@
 class Twilio < Formula
   desc "unleash the power of Twilio from your command prompt"
   homepage "https://github.com/twilio/twilio-cli"
-  url "https://twilio-cli-prod.s3.amazonaws.com/twilio-v5.20.1/twilio-v5.20.1.tar.gz"
-  version "5.20.1"
-  sha256 "797cca2fbc0d7429e0eae5d9de94e4f83023d5a506aa2a7f8398dfeea78d5c76"
+  url "https://twilio-cli-prod.s3.amazonaws.com/twilio-v5.21.0/twilio-v5.21.0.tar.gz"
+  version "5.21.0"
+  sha256 "506d5143125a4175150ab03259b60f44947770c5dd189c99284a4fd6b0c2f8e1"
   depends_on "node"
 
   def install
diff --git a/Formula/twilio@5.20.1.rb b/Formula/twilio@5.20.1.rb
new file mode 100644
index 0000000..68c724f
--- /dev/null
+++ b/Formula/twilio@5.20.1.rb
@@ -0,0 +1,21 @@
+require "language/node"
+
+class TwilioAT5201 < Formula
+  desc "unleash the power of Twilio from your command prompt"
+  homepage "https://github.com/twilio/twilio-cli"
+  url "https://twilio-cli-prod.s3.amazonaws.com/twilio-v5.20.1/twilio-v5.20.1.tar.gz"
+  version "5.20.1"
+  sha256 "797cca2fbc0d7429e0eae5d9de94e4f83023d5a506aa2a7f8398dfeea78d5c76"
+  depends_on "node"
+
+  def install
+    inreplace "bin/twilio", /^CLIENT_HOME=/, "export TWILIO_OCLIF_CLIENT_HOME=#{lib/"client"}\nCLIENT_HOME="
+    libexec.install Dir["*"]
+    bin.install_symlink libexec/"bin/twilio"
+  end
+
+  def post_install
+    pid = spawn("node #{libexec}/welcome.js")
+    Process.wait pid
+  end
+end