diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3133fc102b..5fe956ca37 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -241,8 +241,7 @@ jobs:
       - name: Lint with slicelabels
         uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9.2.0
         with:
-          # goexperiment.synctest to ensure we don't miss files that depend on it.
-          args: --verbose --build-tags=slicelabels,goexperiment.synctest
+          args: --verbose --build-tags=slicelabels
           version: ${{ steps.golangci-lint-version.outputs.version }}
       - name: Lint with dedupelabels
         uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9.2.0
diff --git a/util/testutil/synctest/disabled.go b/util/testutil/synctest/disabled.go
deleted file mode 100644
index 595b93c650..0000000000
--- a/util/testutil/synctest/disabled.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright The Prometheus Authors
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:build !goexperiment.synctest && !go1.25
-
-package synctest
-
-import (
-	"testing"
-)
-
-func Test(t *testing.T, _ func(t *testing.T)) {
-	t.Skip("goexperiment.synctest is not enabled")
-}
-
-func Wait() {
-	// It isn't meant to be called outside of Test().
-	panic("goexperiment.synctest is not enabled")
-}
diff --git a/util/testutil/synctest/enabled.go b/util/testutil/synctest/enabled.go
deleted file mode 100644
index d219903809..0000000000
--- a/util/testutil/synctest/enabled.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright The Prometheus Authors
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:build goexperiment.synctest && !go1.25
-
-package synctest
-
-import (
-	"testing"
-	"testing/synctest"
-)
-
-func Test(t *testing.T, f func(t *testing.T)) {
-	synctest.Run(func() {
-		f(t)
-	})
-}
-
-func Wait() {
-	synctest.Wait()
-}
diff --git a/util/testutil/synctest/synctest.go b/util/testutil/synctest/synctest.go
index 41750f9892..e3099c2d6a 100644
--- a/util/testutil/synctest/synctest.go
+++ b/util/testutil/synctest/synctest.go
@@ -11,8 +11,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build go1.25
-
 package synctest
 
 import (