Homebrew · iMichka · Feb 3, 2025
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
@@ -66,7 +66,7 @@ jobs:
               "homebrew/ubuntu${{matrix.version}}:${brew_version}"
               "homebrew/ubuntu${{matrix.version}}:latest"
             )
-            if [[ "${{ matrix.version }}" == "22.04" ]]; then
+            if [[ "${{ matrix.version }}" == "24.04" ]]; then
               tags+=(
                 "ghcr.io/homebrew/brew:${brew_version}"
                 "ghcr.io/homebrew/brew:latest"
@@ -76,7 +76,7 @@ jobs:
             fi
           elif [[ "${GITHUB_EVENT_NAME}" == "merge_group" &&
                   "${GITHUB_REF}" == "refs/heads/master" &&
-                  "${{ matrix.version }}" == "22.04" ]]; then
+                  "${{ matrix.version }}" == "24.04" ]]; then
             tags+=(
               "ghcr.io/homebrew/brew:master"
               "ghcr.io/homebrew/ubuntu${{ matrix.version }}:master"
@@ -86,7 +86,7 @@ jobs:
           fi
           if [[ "${{ matrix.version }}" == "18.04" ]]; then
             # odeprecated: remove this in Homebrew >=4.5
-            echo "The homebrew/ubuntu18.04 image is deprecated and will soon be retired. Use homebrew/ubuntu22.04 or homebrew/ubuntu24.04 or homebrew/ubuntu20.04 or homebrew/brew." > .docker-deprecate
+            echo "The homebrew/ubuntu18.04 image is deprecated and will soon be retired. Use homebrew/ubuntu24.04 or homebrew/ubuntu22.04 or homebrew/ubuntu20.04 or homebrew/brew." > .docker-deprecate
           fi
 
           {

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -371,9 +371,12 @@ jobs:
     strategy:
       matrix:
         include:
+          - name: test default formula (Ubuntu 24.04)
+            runs-on: ubuntu-latest
+            container: ghcr.io/homebrew/ubuntu24.04:master
           - name: test default formula (Ubuntu 22.04)
             runs-on: ubuntu-latest
-            container: ghcr.io/homebrew/ubuntu22.04:master
+            container: ghcr.io/homebrew/ubuntu22.04
           - name: test default formula (Ubuntu 20.04)
             runs-on: ubuntu-latest
             container: ghcr.io/homebrew/ubuntu20.04

diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-ARG version=22.04
+ARG version=24.04
 # version is passed through by Docker.
 # shellcheck disable=SC2154
 FROM ubuntu:"${version}"

diff --git a/Library/Homebrew/dev-cmd/dispatch-build-bottle.rb b/Library/Homebrew/dev-cmd/dispatch-build-bottle.rb
@@ -65,7 +65,7 @@ def run
         end
 
         if args.linux?
-          runners << "ubuntu-22.04"
+          runners << "ubuntu-24.04"
         elsif args.linux_self_hosted?
           runners << "linux-self-hosted-1"
         end

diff --git a/Library/Homebrew/dev-cmd/tap-new.rb b/Library/Homebrew/dev-cmd/tap-new.rb
@@ -85,7 +85,7 @@ def run
             test-bot:
               strategy:
                 matrix:
-                  os: [ubuntu-22.04, macos-13, macos-15]
+                  os: [ubuntu-24.04, macos-13, macos-15]
               runs-on: ${{ matrix.os }}
               steps:
                 - name: Set up Homebrew
@@ -139,7 +139,7 @@ def run
           jobs:
             pr-pull:
               if: contains(github.event.pull_request.labels.*.name, '#{label}')
-              runs-on: ubuntu-22.04
+              runs-on: ubuntu-24.04
               permissions:
           #{pr_pull_permissions.sort.map { |k, v| "      #{k}: #{v}" }.join("\n")}
               steps:

diff --git a/Library/Homebrew/github_runner_matrix.rb b/Library/Homebrew/github_runner_matrix.rb
@@ -86,7 +86,7 @@ def linux_runner_spec
       name:      "Linux",
       runner:    linux_runner,
       container: {
-        image:   "ghcr.io/homebrew/ubuntu22.04:master",
+        image:   "ghcr.io/homebrew/ubuntu24.04:master",
         options: "--user=linuxbrew -e GITHUB_ACTIONS_HOMEBREW_SELF_HOSTED",
       },
       workdir:   "/github/home",

diff --git a/Library/Homebrew/os.rb b/Library/Homebrew/os.rb
@@ -46,11 +46,11 @@ def self.kernel_name
   ::OS_VERSION = T.let(ENV.fetch("HOMEBREW_OS_VERSION").freeze, String)
 
   # See Linux-CI.md
-  LINUX_CI_OS_VERSION = "Ubuntu 22.04"
-  LINUX_GLIBC_CI_VERSION = "2.35"
-  LINUX_GLIBC_NEXT_CI_VERSION = "2.35"
-  LINUX_GCC_CI_VERSION = "11.0"
-  LINUX_PREFERRED_GCC_COMPILER_FORMULA = "gcc@11" # https://packages.ubuntu.com/jammy/gcc
+  LINUX_CI_OS_VERSION = "Ubuntu 24.04"
+  LINUX_GLIBC_CI_VERSION = "2.39"
+  LINUX_GLIBC_NEXT_CI_VERSION = "2.39"
+  LINUX_GCC_CI_VERSION = "13.0"
+  LINUX_PREFERRED_GCC_COMPILER_FORMULA = "gcc@13" # https://packages.ubuntu.com/noble/gcc
   LINUX_PREFERRED_GCC_RUNTIME_FORMULA = "gcc"
 
   if OS.mac?

diff --git a/Library/Homebrew/test/dev-cmd/determine-test-runners_spec.rb b/Library/Homebrew/test/dev-cmd/determine-test-runners_spec.rb
@@ -16,7 +16,7 @@ def get_runners(file)
     FileUtils.rm_f github_output
   end
 
-  let(:linux_runner) { "ubuntu-22.04" }
+  let(:linux_runner) { "ubuntu-24.04" }
   # We need to make sure we write to a different path for each example.
   let(:github_output) { "#{TEST_TMPDIR}/github_output#{DetermineRunnerTestHelper.new.number}" }
   let(:ephemeral_suffix) { "-12345" }

diff --git a/Library/Homebrew/test/linux_runner_spec_spec.rb b/Library/Homebrew/test/linux_runner_spec_spec.rb
@@ -7,7 +7,7 @@
     described_class.new(
       name:      "Linux",
       runner:    "ubuntu-latest",
-      container: { image: "ghcr.io/homebrew/ubuntu22.04:master", options: "--user=linuxbrew" },
+      container: { image: "ghcr.io/homebrew/ubuntu24.04:master", options: "--user=linuxbrew" },
       workdir:   "/github/home",
       timeout:   360,
       cleanup:   false,

diff --git a/Library/Homebrew/test/unpack_strategy/zstd_spec.rb b/Library/Homebrew/test/unpack_strategy/zstd_spec.rb
@@ -9,7 +9,7 @@
     # `UnpackStrategy.detect(path)` for a `.tar.XXX` file returns either `UnpackStrategy::Tar` if
     # the host's `tar` is able to extract that compressed file or `UnpackStrategy::XXX` otherwise,
     # such as `UnpackStrategy::Zstd`. On macOS `UnpackStrategy.detect("container.tar.zst")`
-    # returns `UnpackStrategy::Zstd` and on Ubuntu 22.04 it returns `UnpackStrategy::Tar`,
+    # returns `UnpackStrategy::Zstd` and on Ubuntu 24.04 it returns `UnpackStrategy::Tar`,
     # because the host's version of `tar` is recent enough and `zstd` is installed.
     expect(UnpackStrategy.detect(path)).to(be_a(described_class).or(be_a(UnpackStrategy::Tar)))
   end

diff --git a/docs/Linux-CI.md b/docs/Linux-CI.md
@@ -4,7 +4,9 @@ last_review_date: "1970-01-01"
 
 # Linux CI in `homebrew/core`
 
-We currently use Ubuntu 22.04 for bottling in `homebrew/core`.
+We currently use Ubuntu 24.04 for bottling in `homebrew/core`.
+
+We try to use the latest Ubuntu LTS version for our CI no earlier than 3 months after its release and, ideally, no more than 12 months after its release.
 
 ## Ubuntu vs. other Linux distributions
 
@@ -16,14 +18,6 @@ Our bottles are compatible with other distributions like Debian/CentOS, even whe
 
 ## Past and next versions
 
-We have moved our CI to Ubuntu 22.04
-
-Moving from Ubuntu 16.04 to Ubuntu 22.04 (and thus skipping version 18.04 and 20.04) took longer than expected.
-
-We plan to proceed with regular updates from 2022 onwards. We aim to use the latest Ubuntu LTS version for our CI.
-
-We will start using the latest Ubuntu LTS version for our CI no earlier than 3 months after its release and, ideally, no more than 12 months after its release.
-
 | Distribution | Glibc | GCC | LTS standard security maintenance |
 |---|---|---|---|
 | Ubuntu 14.04 | 2.19 | 4 | From 2014 to 2017 |