diff --git a/api/filters/namespace/namespace.go b/api/filters/namespace/namespace.go
index e554600bc..85484bf70 100644
--- a/api/filters/namespace/namespace.go
+++ b/api/filters/namespace/namespace.go
@@ -18,9 +18,17 @@ type Filter struct {
 
 	// FsSlice contains the FieldSpecs to locate the namespace field
 	FsSlice types.FsSlice `json:"fieldSpecs,omitempty" yaml:"fieldSpecs,omitempty"`
+
+	trackableSetter filtersutil.TrackableSetter
 }
 
 var _ kio.Filter = Filter{}
+var _ kio.TrackableFilter = &Filter{}
+
+// WithMutationTracker registers a callback which will be invoked each time a field is mutated
+func (ns *Filter) WithMutationTracker(callback func(key, value, tag string, node *yaml.RNode)) {
+	ns.trackableSetter.WithMutationTracker(callback)
+}
 
 func (ns Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
 	return kio.FilterAll(yaml.FilterFunc(ns.run)).Filter(nodes)
@@ -44,7 +52,7 @@ func (ns Filter) run(node *yaml.RNode) (*yaml.RNode, error) {
 	// transformations based on data -- :)
 	err := node.PipeE(fsslice.Filter{
 		FsSlice:    ns.FsSlice,
-		SetValue:   filtersutil.SetScalar(ns.Namespace),
+		SetValue:   ns.trackableSetter.SetScalar(ns.Namespace),
 		CreateKind: yaml.ScalarNode, // Namespace is a ScalarNode
 		CreateTag:  yaml.NodeTagString,
 	})
@@ -77,7 +85,7 @@ func (ns Filter) metaNamespaceHack(obj *yaml.RNode, gvk resid.Gvk) error {
 		FsSlice: []types.FieldSpec{
 			{Path: types.MetadataNamespacePath, CreateIfNotPresent: true},
 		},
-		SetValue:   filtersutil.SetScalar(ns.Namespace),
+		SetValue:   ns.trackableSetter.SetScalar(ns.Namespace),
 		CreateKind: yaml.ScalarNode, // Namespace is a ScalarNode
 	}
 	_, err := f.Filter(obj)
@@ -123,11 +131,15 @@ func (ns Filter) roleBindingHack(obj *yaml.RNode, gvk resid.Gvk) error {
 		}
 
 		// set the namespace for the default account
-		v := yaml.NewScalarRNode(ns.Namespace)
-		return o.PipeE(
+		node, err := o.Pipe(
 			yaml.LookupCreate(yaml.ScalarNode, "namespace"),
-			yaml.FieldSetter{Value: v},
 		)
+		if err != nil {
+			return err
+		}
+
+		return ns.trackableSetter.SetScalar(ns.Namespace)(node)
+
 	})
 
 	return err
diff --git a/api/filters/namespace/namespace_test.go b/api/filters/namespace/namespace_test.go
index e9854811e..302abe035 100644
--- a/api/filters/namespace/namespace_test.go
+++ b/api/filters/namespace/namespace_test.go
@@ -12,8 +12,11 @@ import (
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	filtertest_test "sigs.k8s.io/kustomize/api/testutils/filtertest"
 	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
 )
 
+var mutationTrackerStub = filtertest_test.MutationTrackerStub{}
+
 var tests = []TestCase{
 	{
 		name: "add",
@@ -283,21 +286,91 @@ a:
 			},
 		},
 	},
+
+	{
+		name: "mutation tracker",
+		input: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+---
+apiVersion: example.com/v1
+kind: RoleBinding
+subjects:
+- name: default
+`,
+		expected: `
+apiVersion: example.com/v1
+kind: Foo
+metadata:
+  name: instance
+  namespace: bar
+a:
+  b:
+    c: bar
+---
+apiVersion: example.com/v1
+kind: RoleBinding
+subjects:
+- name: default
+  namespace: bar
+metadata:
+  namespace: bar
+a:
+  b:
+    c: bar
+`,
+		filter: namespace.Filter{Namespace: "bar"},
+		fsslice: []types.FieldSpec{
+			{
+				Path:               "a/b/c",
+				CreateIfNotPresent: true,
+			},
+		},
+		mutationTracker: mutationTrackerStub.MutationTracker,
+		expectedSetValueArgs: []filtertest_test.SetValueArg{
+			{
+				Value:    "bar",
+				NodePath: []string{"metadata", "namespace"},
+			},
+			{
+				Value:    "bar",
+				NodePath: []string{"a", "b", "c"},
+			},
+			{
+				Value:    "bar",
+				NodePath: []string{"metadata", "namespace"},
+			},
+			{
+				Value:    "bar",
+				NodePath: []string{"namespace"},
+			},
+			{
+				Value:    "bar",
+				NodePath: []string{"a", "b", "c"},
+			},
+		},
+	},
 }
 
 type TestCase struct {
-	name     string
-	input    string
-	expected string
-	filter   namespace.Filter
-	fsslice  types.FsSlice
+	name                 string
+	input                string
+	expected             string
+	filter               namespace.Filter
+	fsslice              types.FsSlice
+	mutationTracker      func(key, value, tag string, node *yaml.RNode)
+	expectedSetValueArgs []filtertest_test.SetValueArg
 }
 
 var config = builtinconfig.MakeDefaultConfig()
 
 func TestNamespace_Filter(t *testing.T) {
 	for i := range tests {
+		mutationTrackerStub.Reset()
 		test := tests[i]
+		test.filter.WithMutationTracker(test.mutationTracker)
 		t.Run(test.name, func(t *testing.T) {
 			test.filter.FsSlice = append(config.NameSpace, test.fsslice...)
 			if !assert.Equal(t,
@@ -306,6 +379,7 @@ func TestNamespace_Filter(t *testing.T) {
 					filtertest_test.RunFilter(t, test.input, test.filter))) {
 				t.FailNow()
 			}
+			assert.Equal(t, test.expectedSetValueArgs, mutationTrackerStub.SetValueArgs())
 		})
 	}
 }