diff --git a/Formula/gazebo11.rb b/Formula/gazebo11.rb
index 83407cce7..83ce45116 100644
--- a/Formula/gazebo11.rb
+++ b/Formula/gazebo11.rb
@@ -14,6 +14,8 @@ class Gazebo11 < Formula
     sha256 ventura: "d4376884717e4f5e49e453f00ff13b1e10c3322ed9a94e5dde5de008567538ef"
   end
 
+  deprecate! date: "2025-01-31", because: "is past end-of-life date"
+
   depends_on "cmake" => :build
   depends_on "pkgconf" => :build
 
diff --git a/Formula/ignition-common3.rb b/Formula/ignition-common3.rb
index 585fd8ebd..3b87f5a92 100644
--- a/Formula/ignition-common3.rb
+++ b/Formula/ignition-common3.rb
@@ -13,6 +13,8 @@ class IgnitionCommon3 < Formula
     sha256 cellar: :any, ventura: "6169fb10e477aa4252d1934f64d6a7c605f74f6d1cc1cc0caeb08841a44f15cf"
   end
 
+  deprecate! date: "2025-01-31", because: "is past end-of-life date"
+
   depends_on "cmake"
   depends_on "ffmpeg"
   depends_on "freeimage"
diff --git a/Formula/ignition-fuel-tools4.rb b/Formula/ignition-fuel-tools4.rb
index 73bac9c96..11c05e5ae 100644
--- a/Formula/ignition-fuel-tools4.rb
+++ b/Formula/ignition-fuel-tools4.rb
@@ -13,6 +13,8 @@ class IgnitionFuelTools4 < Formula
     sha256 cellar: :any, ventura: "794c8a174891712656c7ee4bbcf0c2ceee97a02dd2cce3453e23e9bb365e0b78"
   end
 
+  deprecate! date: "2025-01-31", because: "is past end-of-life date"
+
   depends_on "cmake"
   depends_on "ignition-cmake2"
   depends_on "ignition-common3"
diff --git a/Formula/ignition-msgs5.rb b/Formula/ignition-msgs5.rb
index 6f1784637..22d1cee93 100644
--- a/Formula/ignition-msgs5.rb
+++ b/Formula/ignition-msgs5.rb
@@ -13,6 +13,8 @@ class IgnitionMsgs5 < Formula
     sha256 cellar: :any, ventura: "498d2488303d8eb67484d9c7c15203601fe3d1ce5828f3bcfec7bb8ee57e46b9"
   end
 
+  deprecate! date: "2025-01-31", because: "is past end-of-life date"
+
   depends_on "cmake"
   depends_on "ignition-cmake2"
   depends_on "ignition-math6"
diff --git a/Formula/sdformat9.rb b/Formula/sdformat9.rb
index 85182a314..4d5c48dd9 100644
--- a/Formula/sdformat9.rb
+++ b/Formula/sdformat9.rb
@@ -15,6 +15,8 @@ class Sdformat9 < Formula
     sha256 monterey: "0d72b95fa548878ccb2272c1bf793e65a274af39ce0de5fb41c4b8a5a647b50d"
   end
 
+  deprecate! date: "2025-01-31", because: "is past end-of-life date"
+
   depends_on "cmake" => [:build, :test]
   depends_on "pkgconf" => [:build, :test]
 
diff --git a/README.md b/README.md
index 0b45196b7..ba54260ef 100644
--- a/README.md
+++ b/README.md
@@ -34,10 +34,6 @@ gz-utils      | [![gz-utils1](https://build.osrfoundation.org/buildStatus/icon?j
 sdformat      | [![sdformat12](https://build.osrfoundation.org/buildStatus/icon?job=sdformat12-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-fortress/job/sdformat12-install_bottle-homebrew-amd64/)             | [![sdformat14](https://build.osrfoundation.org/buildStatus/icon?job=sdformat14-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-harmonic/job/sdformat14-install_bottle-homebrew-amd64/)             | [![sdformat15](https://build.osrfoundation.org/buildStatus/icon?job=sdformat15-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-ionic/job/sdformat15-install_bottle-homebrew-amd64/)
 collection    | [![gz-fortress](https://build.osrfoundation.org/buildStatus/icon?job=gz_fortress-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-fortress/job/gz_fortress-install_bottle-homebrew-amd64/)          | [![gz-harmonic](https://build.osrfoundation.org/buildStatus/icon?job=gz_harmonic-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-harmonic/job/gz_harmonic-install_bottle-homebrew-amd64/)          | [![gz-ionic](https://build.osrfoundation.org/buildStatus/icon?job=gz_ionic-install_bottle-homebrew-amd64)](https://build.osrfoundation.org/view/gz-ionic/job/gz_ionic-install_bottle-homebrew-amd64/)
 
-### Gazebo Classic
-
-* [![Build Status](https://build.osrfoundation.org/buildStatus/icon?job=gazebo-install-one_liner-homebrew-amd64)](https://build.osrfoundation.org/job/gazebo-install-one_liner-homebrew-amd64/)         [gazebo-classic11](https://build.osrfoundation.org/job/gazebo-install-one_liner-homebrew-amd64/)
-
 ## To build bottles
 
 The https://build.osrfoundation.org jenkins instance is used for building bottles with the following job