diff --git a/Formula/wisp.rb b/Formula/wisp.rb
index 99b5597..f47aebb 100644
--- a/Formula/wisp.rb
+++ b/Formula/wisp.rb
@@ -3,6 +3,7 @@ class Wisp < Formula
   homepage "https://www.draketo.de/software/wisp"
   url "https://www.draketo.de/software/wisp-1.0.11.tar.gz"
   sha256 "a643ef884f3cd3078c5e50f36de4c425ee7a1ca4fac73096769ebc287cb3dedd"
+  revision 1
 
   bottle do
     root_url "https://github.com/aconchillo/homebrew-guile/releases/download/wisp-1.0.11"