diff --git a/MODULE.bazel b/MODULE.bazel
index 8bdc850e3271..1ae226f0e89b 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -273,7 +273,7 @@ use_repo(
 )
 
 go_sdk = use_extension("@rules_go//go:extensions.bzl", "go_sdk")
-go_sdk.download(version = "1.26.4")
+go_sdk.download(version = "1.27rc1")
 
 go_deps = use_extension("@gazelle//:extensions.bzl", "go_deps")
 go_deps.from_file(go_mod = "//go/extractor:go.mod")
diff --git a/docs/codeql/reusables/supported-versions-compilers.rst b/docs/codeql/reusables/supported-versions-compilers.rst
index b73c9d7e6e97..814c39f90103 100644
--- a/docs/codeql/reusables/supported-versions-compilers.rst
+++ b/docs/codeql/reusables/supported-versions-compilers.rst
@@ -17,7 +17,7 @@
 
    .NET 5, .NET 6, .NET 7, .NET 8, .NET 9, .NET 10","``.sln``, ``.slnx``, ``.csproj``, ``.cs``, ``.cshtml``, ``.xaml``"
    GitHub Actions,"Not applicable",Not applicable,"``.github/workflows/*.yml``, ``.github/workflows/*.yaml``, ``**/action.yml``, ``**/action.yaml``"
-   Go (aka Golang), "Go up to 1.26", "Go 1.11 or more recent", ``.go``
+   Go (aka Golang), "Go up to 1.27", "Go 1.11 or more recent", ``.go``
    Java,"Java 7 to 26 [6]_","javac (OpenJDK and Oracle JDK),
 
    Eclipse compiler for Java (ECJ) [7]_",``.java``
diff --git a/go/actions/test/action.yml b/go/actions/test/action.yml
index 3cc3334d39ed..05184dae1d8e 100644
--- a/go/actions/test/action.yml
+++ b/go/actions/test/action.yml
@@ -4,7 +4,7 @@ inputs:
   go-test-version:
     description: Which Go version to use for running the tests
     required: false
-    default: "~1.26.4"
+    default: "1.27.0-rc.1"
   run-code-checks:
     description: Whether to run formatting, code and qhelp generation checks
     required: false
diff --git a/go/extractor/autobuilder/build-environment.go b/go/extractor/autobuilder/build-environment.go
index c660373205b2..bd7fc0adabe1 100644
--- a/go/extractor/autobuilder/build-environment.go
+++ b/go/extractor/autobuilder/build-environment.go
@@ -12,7 +12,7 @@ import (
 )
 
 var minGoVersion = util.NewSemVer("1.11")
-var maxGoVersion = util.NewSemVer("1.26")
+var maxGoVersion = util.NewSemVer("1.27")
 
 type versionInfo struct {
 	goModVersion util.SemVer // The version of Go found in the go directive in the `go.mod` file.
diff --git a/go/extractor/go.mod b/go/extractor/go.mod
index 5de56683a3e0..e986a0706d14 100644
--- a/go/extractor/go.mod
+++ b/go/extractor/go.mod
@@ -1,8 +1,8 @@
 module github.com/github/codeql-go/extractor
 
-go 1.26
+go 1.27
 
-toolchain go1.26.4
+toolchain go1.27rc1
 
 // when updating this, run
 //    bazel run @rules_go//go -- mod tidy
diff --git a/go/extractor/toolchain/toolchain_test.go b/go/extractor/toolchain/toolchain_test.go
index 8a6b38318cb9..a62c9016a700 100644
--- a/go/extractor/toolchain/toolchain_test.go
+++ b/go/extractor/toolchain/toolchain_test.go
@@ -8,9 +8,9 @@ import (
 
 func TestParseGoVersion(t *testing.T) {
 	tests := map[string]string{
-		"go version go1.18.9 linux/amd64":            "go1.18.9",
-		"go version go1.26.3-X:nodwarf5 linux/amd64": "go1.26.3",
-		"go version go1.26.3rc1 linux/amd64":         "go1.26.3rc1",
+		"go version go1.18.9 linux/amd64":                                                              "go1.18.9",
+		"go version go1.26.3-X:nodwarf5 linux/amd64":                                                   "go1.26.3",
+		"go version go1.26.3rc1 linux/amd64":                                                           "go1.26.3rc1",
 		"warning: GOPATH set to GOROOT (/usr/local/go) has no effect\ngo version go1.18.9 linux/amd64": "go1.18.9",
 	}
 	for input, expected := range tests {
diff --git a/go/extractor/trap/labels.go b/go/extractor/trap/labels.go
index 473e2e761f2e..ca43bc370252 100644
--- a/go/extractor/trap/labels.go
+++ b/go/extractor/trap/labels.go
@@ -187,7 +187,7 @@ func findMethodOnTypeWithGivenReceiver(tp types.Type, object types.Object) *type
 	if definedType, ok := tp.(*types.Named); ok {
 		for i := 0; i < definedType.NumMethods(); i++ {
 			meth := definedType.Method(i)
-			if object == meth.Type().(*types.Signature).Recv() {
+			if object == meth.Type().(*types.Signature).Recv().Origin() {
 				return meth
 			}
 		}
diff --git a/go/ql/lib/change-notes/2026-06-25-go-1.27.md b/go/ql/lib/change-notes/2026-06-25-go-1.27.md
new file mode 100644
index 000000000000..b1998aee7f54
--- /dev/null
+++ b/go/ql/lib/change-notes/2026-06-25-go-1.27.md
@@ -0,0 +1,4 @@
+---
+category: majorAnalysis
+---
+* Go 1.27 is now supported.