diff --git a/lib/ex_twilio_webhook/plug.ex b/lib/ex_twilio_webhook/plug.ex
index 38f5595..7b4c5fb 100644
--- a/lib/ex_twilio_webhook/plug.ex
+++ b/lib/ex_twilio_webhook/plug.ex
@@ -89,7 +89,7 @@ defmodule ExTwilioWebhook.Plug do
     url = normalize_request_url(settings.public_host, conn)
 
     # extract signature and raw body from the conn, and validate the signature
-    with [signature] <- get_req_header(conn, "x-twilio-signature"),
+    with [signature] <- get_provider_req_header(conn),
          %{raw_body: payload} <- conn.private,
          true <-
            HashHelpers.validate_request_with_body(secret, signature, url, payload) do
@@ -100,6 +100,10 @@ defmodule ExTwilioWebhook.Plug do
     end
   end
 
+  defp get_provider_req_header(conn) do
+    get_req_header(conn, "x-twilio-signature") ||  get_req_header(conn, "x-signalwire-signature")
+  end
+
   def validate_webhook(conn, _settings), do: deny_access(conn)
 
   defp deny_access(conn) do