diff --git a/plugins/scaffolder-backend-module-cookiecutter/src/actions/fetch/cookiecutter.test.ts b/plugins/scaffolder-backend-module-cookiecutter/src/actions/fetch/cookiecutter.test.ts
index 92a636e58b..fad544488a 100644
--- a/plugins/scaffolder-backend-module-cookiecutter/src/actions/fetch/cookiecutter.test.ts
+++ b/plugins/scaffolder-backend-module-cookiecutter/src/actions/fetch/cookiecutter.test.ts
@@ -23,6 +23,7 @@ import { createFetchCookiecutterAction } from './cookiecutter';
 import { join } from 'path';
 import type { ActionContext } from '@backstage/plugin-scaffolder-node';
 import { createMockActionContext } from '@backstage/plugin-scaffolder-node-test-utils';
+import { Writable } from 'stream';
 
 const executeShellCommand = jest.fn();
 const commandExists = jest.fn();
@@ -166,7 +167,7 @@ describe('fetch:cookiecutter', () => {
           join(mockTmpDir, 'template'),
           '--verbose',
         ],
-        logStream: mockContext.logStream,
+        logStream: expect.any(Writable),
       }),
     );
   });
@@ -187,7 +188,7 @@ describe('fetch:cookiecutter', () => {
         },
         workingDir: '/input',
         envVars: { HOME: '/tmp' },
-        logStream: mockContext.logStream,
+        logStream: expect.any(Writable),
       }),
     );
   });
diff --git a/plugins/scaffolder-backend-module-rails/src/actions/fetch/rails/index.test.ts b/plugins/scaffolder-backend-module-rails/src/actions/fetch/rails/index.test.ts
index b43ffcc95c..40514dc7c5 100644
--- a/plugins/scaffolder-backend-module-rails/src/actions/fetch/rails/index.test.ts
+++ b/plugins/scaffolder-backend-module-rails/src/actions/fetch/rails/index.test.ts
@@ -35,6 +35,7 @@ import { createFetchRailsAction } from './index';
 import { fetchContents } from '@backstage/plugin-scaffolder-node';
 import { createMockDirectory } from '@backstage/backend-test-utils';
 import { createMockActionContext } from '@backstage/plugin-scaffolder-node-test-utils';
+import { Writable } from 'stream';
 
 describe('fetch:rails', () => {
   const mockDir = createMockDirectory();
@@ -104,7 +105,7 @@ describe('fetch:rails', () => {
 
     expect(mockRailsTemplater.run).toHaveBeenCalledWith({
       workspacePath: mockContext.workspacePath,
-      logStream: mockContext.logStream,
+      logStream: expect.any(Writable),
       values: mockContext.input.values,
     });
   });
@@ -120,7 +121,7 @@ describe('fetch:rails', () => {
 
     expect(mockRailsTemplater.run).toHaveBeenCalledWith({
       workspacePath: mockContext.workspacePath,
-      logStream: mockContext.logStream,
+      logStream: expect.any(Writable),
       values: {
         ...mockContext.input.values,
         imageName: 'foo/rails-custom-image',