diff --git a/Formula/libnfs.rb b/Formula/libnfs.rb
index 750a75a9ce..c26a5a71e2 100644
--- a/Formula/libnfs.rb
+++ b/Formula/libnfs.rb
@@ -1,8 +1,8 @@
 class Libnfs < Formula
   desc "C client library for NFS"
   homepage "https://github.com/sahlberg/libnfs"
-  url "https://github.com/sahlberg/libnfs/archive/libnfs-2.0.0.tar.gz"
-  sha256 "7ea6cd8fa6c461d01091e584d424d28e137d23ff4b65b95d01a3fd0ef95d120e"
+  url "https://github.com/sahlberg/libnfs/archive/libnfs-4.0.0.tar.gz"
+  sha256 "6ee77e9fe220e2d3e3b1f53cfea04fb319828cc7dbb97dd9df09e46e901d797d"
 
   bottle do
     cellar :any