diff --git a/Aliases/go@1.26 b/Aliases/go@1.27
similarity index 100%
rename from Aliases/go@1.26
rename to Aliases/go@1.27
diff --git a/Formula/e/errcheck.rb b/Formula/e/errcheck.rb
index 79ea2e79a20e..72f9273b6dfc 100644
--- a/Formula/e/errcheck.rb
+++ b/Formula/e/errcheck.rb
@@ -4,6 +4,7 @@ class Errcheck < Formula
   url "https://github.com/kisielk/errcheck/archive/refs/tags/v1.20.0.tar.gz"
   sha256 "d16b7757bf57dea5bbcfce42badd1bbfadd4c112b2da90b4ccaeb81c6c438c1e"
   license "MIT"
+  revision 1
 
   bottle do
     sha256 cellar: :any_skip_relocation, arm64_tahoe:   "eebf1a2df5e0cbfd40864621539bbf42fdce0833739eb268b31c4009a29230df"
diff --git a/Formula/g/go.rb b/Formula/g/go.rb
index 3a28b800dd43..bde8d1ba85d0 100644
--- a/Formula/g/go.rb
+++ b/Formula/g/go.rb
@@ -1,11 +1,11 @@
 class Go < Formula
   desc "Open source programming language to build simple/reliable/efficient software"
   homepage "https://go.dev/"
-  url "https://go.dev/dl/go1.26.5.src.tar.gz"
-  mirror "https://fossies.org/linux/misc/go1.26.5.src.tar.gz"
-  sha256 "495be4bc87176ac567392e5b4116abd98466d33d7b49d41e764ccc6976b2dc42"
+  url "https://go.dev/dl/go1.27rc2.src.tar.gz"
+  mirror "https://fossies.org/linux/misc/go1.27rc2.src.tar.gz"
+  sha256 "860fd7a30b285ee16a2ae0ec5d4441cb47c48872a0a30cb60cae348947f48a25"
   license "BSD-3-Clause"
-  compatibility_version 7
+  compatibility_version 8
   head "https://go.googlesource.com/go.git", branch: "master"
 
   livecheck do
diff --git a/Formula/g/go@1.26.rb b/Formula/g/go@1.26.rb
new file mode 100644
index 000000000000..bce817c63e00
--- /dev/null
+++ b/Formula/g/go@1.26.rb
@@ -0,0 +1,87 @@
+class GoAT126 < Formula
+  desc "Open source programming language to build simple/reliable/efficient software"
+  homepage "https://go.dev/"
+  url "https://go.dev/dl/go1.26.5.src.tar.gz"
+  mirror "https://fossies.org/linux/misc/go1.26.5.src.tar.gz"
+  sha256 "495be4bc87176ac567392e5b4116abd98466d33d7b49d41e764ccc6976b2dc42"
+  license "BSD-3-Clause"
+  compatibility_version 3
+
+  livecheck do
+    url "https://go.dev/dl/?mode=json"
+    regex(/^go[._-]?v?(1\.26(?:\.\d+)*)[._-]src\.t.+$/i)
+    strategy :json do |json, regex|
+      json.map do |release|
+        next if release["stable"] != true
+        next if release["files"].none? { |file| file["filename"].match?(regex) }
+
+        release["version"][/(\d+(?:\.\d+)+)/, 1]
+      end
+    end
+  end
+
+  keg_only :versioned_formula
+
+  depends_on "go" => :build
+
+  def install
+    libexec.install Dir["*"]
+
+    cd libexec/"src" do
+      # Set portable defaults for CC/CXX to be used by cgo
+      with_env(CC: "cc", CXX: "c++") { system "./make.bash" }
+    end
+
+    bin.install_symlink Dir[libexec/"bin/go*"]
+
+    # Remove useless files.
+    # Breaks patchelf because folder contains weird debug/test files
+    rm_r(libexec/"src/debug/elf/testdata")
+    # Binaries built for an incompatible architecture
+    rm_r(libexec/"src/runtime/pprof/testdata")
+    # Remove testdata with binaries for non-native architectures.
+    rm_r(libexec/"src/debug/dwarf/testdata")
+  end
+
+  test do
+    (testpath/"hello.go").write <<~GO
+      package main
+
+      import "fmt"
+
+      func main() {
+          fmt.Println("Hello World")
+      }
+    GO
+
+    # Run go fmt check for no errors then run the program.
+    # This is a a bare minimum of go working as it uses fmt, build, and run.
+    system bin/"go", "fmt", "hello.go"
+    assert_equal "Hello World\n", shell_output("#{bin}/go run hello.go")
+
+    with_env(GOOS: "freebsd", GOARCH: "amd64") do
+      system bin/"go", "build", "hello.go"
+    end
+
+    (testpath/"hello_cgo.go").write <<~GO
+      package main
+
+      /*
+      #include <stdlib.h>
+      #include <stdio.h>
+      void hello() { printf("%s\\n", "Hello from cgo!"); fflush(stdout); }
+      */
+      import "C"
+
+      func main() {
+          C.hello()
+      }
+    GO
+
+    # Try running a sample using cgo without CC or CXX set to ensure that the
+    # toolchain's default choice of compilers work
+    with_env(CC: nil, CXX: nil, CGO_ENABLED: "1") do
+      assert_equal "Hello from cgo!\n", shell_output("#{bin}/go run hello_cgo.go")
+    end
+  end
+end
diff --git a/Formula/g/golangci-lint.rb b/Formula/g/golangci-lint.rb
index 5fad09543d0e..5f121740c6d5 100644
--- a/Formula/g/golangci-lint.rb
+++ b/Formula/g/golangci-lint.rb
@@ -5,6 +5,7 @@ class GolangciLint < Formula
       tag:      "v2.12.2",
       revision: "c0d3ddc9cf3faa61a4e378e879ece580256d76e5"
   license "GPL-3.0-only"
+  revision 1
   head "https://github.com/golangci/golangci-lint.git", branch: "main"
 
   bottle do
diff --git a/Formula/g/govulncheck.rb b/Formula/g/govulncheck.rb
index 8b848586906f..06d8db0b87fd 100644
--- a/Formula/g/govulncheck.rb
+++ b/Formula/g/govulncheck.rb
@@ -4,6 +4,7 @@ class Govulncheck < Formula
   url "https://github.com/golang/vuln/archive/refs/tags/v1.6.0.tar.gz"
   sha256 "70f82d70f3a6757babbeb4e6834536e572d1c822180619ac74b649e3e4f247fb"
   license "BSD-3-Clause"
+  revision 1
   head "https://github.com/golang/vuln.git", branch: "master"
 
   bottle do
diff --git a/audit_exceptions/unstable_allowlist.json b/audit_exceptions/unstable_allowlist.json
index fc870faa5ffb..c807632abe2f 100644
--- a/audit_exceptions/unstable_allowlist.json
+++ b/audit_exceptions/unstable_allowlist.json
@@ -4,6 +4,7 @@
   "avahi": "0.9-rc",
   "aview": "1.3.0rc",
   "ftgl": "2.1.3-rc",
+  "go": "1.27rc",
   "libcaca": "0.99.beta",
   "librasterlite2": "1.1.0-beta",
   "premake": "5.0.0-beta",