diff --git a/yaml.go b/yaml.go
index fc10246..7468586 100644
--- a/yaml.go
+++ b/yaml.go
@@ -417,3 +417,10 @@ func jsonToYAMLValue(j interface{}) interface{} {
 	}
 	return j
 }
+
+// DisallowUnknownFields configures the JSON decoder to error out if unknown
+// fields come along, instead of dropping them by default.
+func DisallowUnknownFields(d *json.Decoder) *json.Decoder {
+	d.DisallowUnknownFields()
+	return d
+}
diff --git a/yaml_go110.go b/yaml_go110.go
deleted file mode 100644
index 94abc17..0000000
--- a/yaml_go110.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// This file contains changes that are only compatible with go 1.10 and onwards.
-
-//go:build go1.10
-// +build go1.10
-
-/*
-Copyright 2021 The Kubernetes 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.
-*/
-
-package yaml
-
-import "encoding/json"
-
-// DisallowUnknownFields configures the JSON decoder to error out if unknown
-// fields come along, instead of dropping them by default.
-func DisallowUnknownFields(d *json.Decoder) *json.Decoder {
-	d.DisallowUnknownFields()
-	return d
-}
diff --git a/yaml_go110_test.go b/yaml_go110_test.go
deleted file mode 100644
index 629fff4..0000000
--- a/yaml_go110_test.go
+++ /dev/null
@@ -1,63 +0,0 @@
-//go:build go1.10
-// +build go1.10
-
-/*
-Copyright 2021 The Kubernetes 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.
-*/
-
-package yaml
-
-import (
-	"fmt"
-	"testing"
-)
-
-func TestUnmarshalWithTags(t *testing.T) {
-	type WithTaggedField struct {
-		Field string `json:"field"`
-	}
-
-	t.Run("Known tagged field", func(t *testing.T) {
-		y := []byte(`field: "hello"`)
-		v := WithTaggedField{}
-		if err := Unmarshal(y, &v, DisallowUnknownFields); err != nil {
-			t.Errorf("unexpected error: %v", err)
-		}
-		if v.Field != "hello" {
-			t.Errorf("v.Field=%v, want 'hello'", v.Field)
-		}
-
-	})
-	t.Run("With unknown tagged field", func(t *testing.T) {
-		y := []byte(`unknown: "hello"`)
-		v := WithTaggedField{}
-		err := Unmarshal(y, &v, DisallowUnknownFields)
-		if err == nil {
-			t.Errorf("want error because of unknown field, got <nil>: v=%#v", v)
-		}
-	})
-
-}
-
-func exampleUnknown() {
-	type WithTaggedField struct {
-		Field string `json:"field"`
-	}
-	y := []byte(`unknown: "hello"`)
-	v := WithTaggedField{}
-	fmt.Printf("%v\n", Unmarshal(y, &v, DisallowUnknownFields))
-	// Ouptut:
-	// unmarshaling JSON: while decoding JSON: json: unknown field "unknown"
-}
diff --git a/yaml_test.go b/yaml_test.go
index bcabc79..00cb371 100644
--- a/yaml_test.go
+++ b/yaml_test.go
@@ -949,3 +949,41 @@ spec:
 		t.Fatalf("expected\n%s\ngot\n%s", string(v2output), v3output)
 	}
 }
+
+func TestUnmarshalWithTags(t *testing.T) {
+	type WithTaggedField struct {
+		Field string `json:"field"`
+	}
+
+	t.Run("Known tagged field", func(t *testing.T) {
+		y := []byte(`field: "hello"`)
+		v := WithTaggedField{}
+		if err := Unmarshal(y, &v, DisallowUnknownFields); err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		if v.Field != "hello" {
+			t.Errorf("v.Field=%v, want 'hello'", v.Field)
+		}
+
+	})
+	t.Run("With unknown tagged field", func(t *testing.T) {
+		y := []byte(`unknown: "hello"`)
+		v := WithTaggedField{}
+		err := Unmarshal(y, &v, DisallowUnknownFields)
+		if err == nil {
+			t.Errorf("want error because of unknown field, got <nil>: v=%#v", v)
+		}
+	})
+
+}
+
+func exampleUnknown() {
+	type WithTaggedField struct {
+		Field string `json:"field"`
+	}
+	y := []byte(`unknown: "hello"`)
+	v := WithTaggedField{}
+	fmt.Printf("%v\n", Unmarshal(y, &v, DisallowUnknownFields))
+	// Ouptut:
+	// unmarshaling JSON: while decoding JSON: json: unknown field "unknown"
+}