diff --git a/Formula/whois.rb b/Formula/whois.rb
index a56077b78d..dadfd7a448 100644
--- a/Formula/whois.rb
+++ b/Formula/whois.rb
@@ -1,8 +1,8 @@
 class Whois < Formula
   desc "Lookup tool for domain names and other internet resources"
   homepage "https://packages.debian.org/sid/whois"
-  url "https://deb.debian.org/debian/pool/main/w/whois/whois_5.4.3.tar.xz"
-  sha256 "fefa84029f70985db19743e51c4a8b318a169426babeaa824a27110c26090fc3"
+  url "https://deb.debian.org/debian/pool/main/w/whois/whois_5.5.0.tar.xz"
+  sha256 "64ec63339d7ad559cd6722bd3141a1e5787817bd921841a813ee17a0a34b6f3d"
   head "https://github.com/rfc1036/whois.git"
 
   bottle do