diff --git a/OWNERS_ALIASES b/OWNERS_ALIASES
index ee0dfa801..9cdc2e438 100644
--- a/OWNERS_ALIASES
+++ b/OWNERS_ALIASES
@@ -128,3 +128,6 @@ aliases:
   wg-resource-management-leads:
     - vishh
     - derekwaynecarr
+## BEGIN CUSTOM CONTENT
+
+## END CUSTOM CONTENT
diff --git a/generator/app.go b/generator/app.go
index 4e3abd2de..2c96eaf86 100644
--- a/generator/app.go
+++ b/generator/app.go
@@ -41,8 +41,10 @@ const (
 	aliasesOutput = "OWNERS_ALIASES"
 	indexFilename = "README.md"
 
-	beginMarker = "<!-- BEGIN CUSTOM CONTENT -->"
-	endMarker   = "<!-- END CUSTOM CONTENT -->"
+	beginCustomMarkdown = "<!-- BEGIN CUSTOM CONTENT -->"
+	endCustomMarkdown   = "<!-- END CUSTOM CONTENT -->"
+	beginCustomYaml     = "## BEGIN CUSTOM CONTENT"
+	endCustomYaml       = "## END CUSTOM CONTENT"
 )
 
 var (
@@ -129,10 +131,23 @@ func createDirIfNotExists(path string) error {
 	return nil
 }
 
-func getExistingContent(path string) (string, error) {
+func getExistingContent(path string, fileFormat string) (string, error) {
 	capture := false
 	var captured []string
 
+	beginMarker := ""
+	endMarker := ""
+	switch fileFormat {
+	case "markdown":
+		beginMarker = beginCustomMarkdown
+		endMarker = endCustomMarkdown
+	case "yaml":
+		beginMarker = beginCustomYaml
+		endMarker = endCustomYaml
+	case "":
+		return "", nil
+	}
+
 	// NOTE: For some reason using bufio.Scanner with existing file pointer prepends
 	// a bunch of null ^@ characters, so using to ioutil.ReadFile instead.
 	content, err := ioutil.ReadFile(path)
@@ -166,7 +181,7 @@ func tzUrlEncode(tz string) string {
 	return strings.Replace(url.QueryEscape(tz), "+", "%20", -1)
 }
 
-func writeTemplate(templatePath, outputPath string, customContent bool, data interface{}) error {
+func writeTemplate(templatePath, outputPath string, fileFormat string, data interface{}) error {
 	// set up template
 	t, err := template.New(filepath.Base(templatePath)).
 		Funcs(funcMap).
@@ -191,7 +206,7 @@ func writeTemplate(templatePath, outputPath string, customContent bool, data int
 	defer f.Close()
 
 	// get any existing content
-	content, err := getExistingContent(outputPath)
+	content, err := getExistingContent(outputPath, fileFormat)
 	if err != nil {
 		return err
 	}
@@ -205,15 +220,25 @@ func writeTemplate(templatePath, outputPath string, customContent bool, data int
 		return err
 	}
 
-	// custom content block
-	if customContent {
-		writeCustomContentBlock(f, content)
-	}
+	writeCustomContentBlock(f, content, fileFormat)
 
 	return nil
 }
 
-func writeCustomContentBlock(f *os.File, content string) {
+func writeCustomContentBlock(f *os.File, content string, fileFormat string) {
+	beginMarker := ""
+	endMarker := ""
+	switch fileFormat {
+	case "markdown":
+		beginMarker = beginCustomMarkdown
+		endMarker = endCustomMarkdown
+	case "yaml":
+		beginMarker = beginCustomYaml
+		endMarker = endCustomYaml
+	case "":
+		return
+	}
+
 	lines := []string{beginMarker, "\n", content, "\n", endMarker, "\n"}
 	for _, line := range lines {
 		f.Write([]byte(line))
@@ -244,7 +269,7 @@ func createGroupReadme(groups []Group, prefix string) error {
 
 		outputPath := filepath.Join(outputDir, indexFilename)
 		readmePath := filepath.Join(baseGeneratorDir, templateDir, fmt.Sprintf("%s_%s", prefix, readmeTemplate))
-		if err := writeTemplate(readmePath, outputPath, true, group); err != nil {
+		if err := writeTemplate(readmePath, outputPath, "markdown", group); err != nil {
 			return err
 		}
 	}
@@ -284,14 +309,14 @@ func main() {
 
 	fmt.Println("Generating sig-list.md")
 	outputPath := filepath.Join(baseGeneratorDir, sigListOutput)
-	err = writeTemplate(filepath.Join(baseGeneratorDir, templateDir, listTemplate), outputPath, true, ctx)
+	err = writeTemplate(filepath.Join(baseGeneratorDir, templateDir, listTemplate), outputPath, "markdown", ctx)
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	fmt.Println("Generating OWNERS_ALIASES")
 	outputPath = filepath.Join(baseGeneratorDir, aliasesOutput)
-	err = writeTemplate(filepath.Join(baseGeneratorDir, templateDir, aliasesTemplate), outputPath, false, ctx)
+	err = writeTemplate(filepath.Join(baseGeneratorDir, templateDir, aliasesTemplate), outputPath, "yaml", ctx)
 	if err != nil {
 		log.Fatal(err)
 	}
diff --git a/generator/app_test.go b/generator/app_test.go
index 038e470d5..f2a6ee25e 100644
--- a/generator/app_test.go
+++ b/generator/app_test.go
@@ -67,7 +67,7 @@ func TestGetExistingData(t *testing.T) {
 	}
 
 	for _, c := range cases {
-		content, err := getExistingContent(c.path)
+		content, err := getExistingContent(c.path, "markdown")
 		if err != nil && c.expectErr == false {
 			t.Fatalf("Received unexpected error for %s: %v", c.path, err)
 		}
@@ -94,38 +94,38 @@ content!
 `
 
 	cases := []struct {
-		templatePath  string
-		outputPath    string
-		data          map[string]string
-		expectErr     bool
-		customContent bool
-		expected      string
+		templatePath string
+		outputPath   string
+		data         map[string]string
+		expectErr    bool
+		fileFormat   string
+		expected     string
 	}{
 		{
-			templatePath:  "./testdata/non_existent_template.tmpl",
-			expectErr:     true,
-			customContent: true,
+			templatePath: "./testdata/non_existent_template.tmpl",
+			expectErr:    true,
+			fileFormat:   "markdown",
 		},
 		{
-			templatePath:  "./testdata/example.tmpl",
-			outputPath:    "/tmp/non_existing_path.md",
-			expectErr:     false,
-			customContent: true,
-			data:          map[string]string{"Message": "Hello!"},
-			expected:      "Hello!",
+			templatePath: "./testdata/example.tmpl",
+			outputPath:   "/tmp/non_existing_path.md",
+			expectErr:    false,
+			fileFormat:   "markdown",
+			data:         map[string]string{"Message": "Hello!"},
+			expected:     "Hello!",
 		},
 		{
-			templatePath:  "./testdata/example.tmpl",
-			outputPath:    "./testdata/example.md",
-			expectErr:     false,
-			customContent: true,
-			data:          map[string]string{"Message": "Hello!"},
-			expected:      customContent,
+			templatePath: "./testdata/example.tmpl",
+			outputPath:   "./testdata/example.md",
+			expectErr:    false,
+			fileFormat:   "markdown",
+			data:         map[string]string{"Message": "Hello!"},
+			expected:     customContent,
 		},
 	}
 
 	for _, c := range cases {
-		err := writeTemplate(c.templatePath, c.outputPath, c.customContent, c.data)
+		err := writeTemplate(c.templatePath, c.outputPath, c.fileFormat, c.data)
 		if err != nil && c.expectErr == false {
 			t.Fatalf("Received unexpected error for %s: %v", c.templatePath, err)
 		}
diff --git a/hack/verify.sh b/hack/verify.sh
index 8eb759822..52d57a020 100755
--- a/hack/verify.sh
+++ b/hack/verify.sh
@@ -19,7 +19,7 @@ make 1>/dev/null
 mismatches=0
 break=$(printf "=%.0s" $(seq 1 68))
 
-for file in $(ls ${CRT_DIR}/sig-*/README.md ${CRT_DIR}/wg-*/README.md ${CRT_DIR}/sig-list.md); do
+for file in $(ls ${CRT_DIR}/sig-*/README.md ${CRT_DIR}/wg-*/README.md ${CRT_DIR}/sig-list.md ${CRT_DIR}/OWNERS_ALIASES); do
   real=${file#$CRT_DIR/}
   if ! diff -q ${file} ${WORKING_DIR}/${real} &>/dev/null; then
     echo "${file} does not match ${WORKING_DIR}/${real}";