diff --git a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/jsonata/yaml.ts b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/jsonata/yaml.ts
index 723f0b3e4..ea5941097 100644
--- a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/jsonata/yaml.ts
+++ b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/jsonata/yaml.ts
@@ -18,13 +18,13 @@ import jsonata from 'jsonata';
 import { resolveSafeChildPath } from '@backstage/backend-common';
 import fs from 'fs-extra';
 import YAML from 'yaml';
-import { yamlOptionsSchema } from '../../types';
+import { stringifyOptions, yamlOptionsSchema } from '../../types';
 
 export function createYamlJSONataTransformAction() {
   return createTemplateAction<{
     path: string;
     expression: string;
-    options?: any;
+    options?: stringifyOptions;
     loadAll?: boolean;
     as?: 'string' | 'object';
   }>({
diff --git a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/merge/merge.ts b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/merge/merge.ts
index 7591ac596..50ab8a844 100644
--- a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/merge/merge.ts
+++ b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/merge/merge.ts
@@ -20,7 +20,7 @@ import fs from 'fs-extra';
 import { extname } from 'path';
 import { isArray, isNull, mergeWith } from 'lodash';
 import YAML from 'yaml';
-import { yamlOptionsSchema } from '../../types';
+import { stringifyOptions, yamlOptionsSchema } from '../../types';
 import detectIndent from 'detect-indent';
 
 function mergeArrayCustomiser(objValue: string | any[], srcValue: any) {
@@ -139,7 +139,7 @@ export function createMergeAction() {
     path: string;
     content: any;
     mergeArrays?: boolean;
-    options?: any;
+    options?: stringifyOptions;
   }>({
     id: 'roadiehq:utils:merge',
     description: 'Merges data into an existing structured file.',
diff --git a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/serialize/yaml.ts b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/serialize/yaml.ts
index 6474bf25a..e30bbdbee 100644
--- a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/serialize/yaml.ts
+++ b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/actions/serialize/yaml.ts
@@ -15,12 +15,12 @@
  */
 import { createTemplateAction } from '@backstage/plugin-scaffolder-node';
 import YAML from 'yaml';
-import { yamlOptionsSchema } from '../../types';
+import { stringifyOptions, yamlOptionsSchema } from '../../types';
 
 export function createSerializeYamlAction() {
   return createTemplateAction<{
     data: any;
-    options?: any;
+    options?: stringifyOptions;
   }>({
     id: 'roadiehq:utils:serialize:yaml',
     description: 'Allows performing serialization on an object',
diff --git a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/types.ts b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/types.ts
index 9804256e4..772e06757 100644
--- a/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/types.ts
+++ b/plugins/scaffolder-actions/scaffolder-backend-module-utils/src/types.ts
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+import { ToStringOptions } from 'yaml';
+
+export type stringifyOptions = Omit<ToStringOptions, 'commentString'>;
+
 export const yamlOptionsSchema = {
   title: 'Options',
   description: 'YAML stringify options',