diff --git a/Formula/sdformat15.rb b/Formula/sdformat15.rb
index ba515491a..66c3d17fa 100644
--- a/Formula/sdformat15.rb
+++ b/Formula/sdformat15.rb
@@ -1,10 +1,9 @@
 class Sdformat15 < Formula
   desc "Simulation Description Format"
   homepage "http://sdformat.org"
-  url "https://osrf-distributions.s3.amazonaws.com/sdformat/releases/sdformat-15.1.1.tar.bz2"
-  sha256 "1f034179c617004b94063f6aa268cac3b375231ee4ae7160fe289c3d9003ab3b"
+  url "https://osrf-distributions.s3.amazonaws.com/sdformat/releases/sdformat-15.1.0.tar.bz2"
+  sha256 "e65d95e1cdb4a52215dcd74133d99c5a83661169bab1112e013139f0ba748258"
   license "Apache-2.0"
-  revision 2
 
   head "https://github.com/gazebosim/sdformat.git", branch: "sdf15"