diff --git a/test/nuts/REST/deploy.mpd.nut.ts b/test/nuts/REST/deploy.mpd.nut.ts
index 3f7a9ad98..027accd67 100644
--- a/test/nuts/REST/deploy.mpd.nut.ts
+++ b/test/nuts/REST/deploy.mpd.nut.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -76,7 +77,7 @@ context(`MPD REST Deploy NUTs [name: ${repo.name}]`, () => {
     process.env.SFDX_REST_DEPLOY = 'true';
     testkit = await SourceTestkit.create({
       repository: repo.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
   });
 
diff --git a/test/nuts/REST/deploy.nut.ts b/test/nuts/REST/deploy.nut.ts
index bdecb33a7..8bb56b636 100644
--- a/test/nuts/REST/deploy.nut.ts
+++ b/test/nuts/REST/deploy.nut.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -50,7 +51,7 @@ context(`REST Deploy NUTs [name: ${repo.name}]`, () => {
     process.env.SFDX_REST_DEPLOY = 'true';
     testkit = await SourceTestkit.create({
       repository: repo.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.deploy({ args: '-p force-app' });
   });
diff --git a/test/nuts/deployDestructive.nut.ts b/test/nuts/deployDestructive.nut.ts
index 140f94421..b63314c6f 100644
--- a/test/nuts/deployDestructive.nut.ts
+++ b/test/nuts/deployDestructive.nut.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { expect } from 'chai';
 import { execCmd } from '@salesforce/cli-plugins-testkit';
 import { SourceTestkit } from '@salesforce/source-testkit';
@@ -33,7 +34,7 @@ describe('source:deploy --destructive NUTs', () => {
 
   before(async () => {
     testkit = await SourceTestkit.create({
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
       repository: 'https://github.com/trailheadapps/dreamhouse-lwc.git',
     });
     execCmd('force:source:deploy --sourcepath force-app', { ensureExitCode: 0 });
diff --git a/test/nuts/seeds/deploy.async.seed.ts b/test/nuts/seeds/deploy.async.seed.ts
index 02d76d8ed..fdc74444d 100644
--- a/test/nuts/seeds/deploy.async.seed.ts
+++ b/test/nuts/seeds/deploy.async.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { getBoolean, getString } from '@salesforce/ts-types';
 import { Result } from '@salesforce/source-testkit/lib/types.js';
@@ -23,7 +24,7 @@ context('Async Deploy NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     // an initial deploy to initialize testkit source tracking
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/deploy.manifest.seed.ts b/test/nuts/seeds/deploy.manifest.seed.ts
index 0e9a6b6b1..b25612e8d 100644
--- a/test/nuts/seeds/deploy.manifest.seed.ts
+++ b/test/nuts/seeds/deploy.manifest.seed.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -20,7 +21,7 @@ context('Deploy manifest NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     // some deploys reference other metadata not included in the deploy, if it's not already in the org it will fail
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/deploy.metadata.seed.ts b/test/nuts/seeds/deploy.metadata.seed.ts
index 94e32a612..4d64e2b36 100644
--- a/test/nuts/seeds/deploy.metadata.seed.ts
+++ b/test/nuts/seeds/deploy.metadata.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -19,7 +20,7 @@ context('Deploy metadata NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     // some deploys reference other metadata not included in the deploy, if it's not already in the org it will fail
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/deploy.quick.seed.ts b/test/nuts/seeds/deploy.quick.seed.ts
index fb9294519..df660e33d 100644
--- a/test/nuts/seeds/deploy.quick.seed.ts
+++ b/test/nuts/seeds/deploy.quick.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -19,7 +20,7 @@ context('Quick Deploy NUTs [name: %REPO_NAME%] [exec: %EXECUTABLE%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
   });
 
diff --git a/test/nuts/seeds/deploy.sourcepath.seed.ts b/test/nuts/seeds/deploy.sourcepath.seed.ts
index 86936ee7e..9a550b6fb 100644
--- a/test/nuts/seeds/deploy.sourcepath.seed.ts
+++ b/test/nuts/seeds/deploy.sourcepath.seed.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { get } from '@salesforce/ts-types';
 import { FileResponse } from '@salesforce/source-deploy-retrieve';
@@ -20,7 +21,7 @@ context('Deploy sourcepath NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
   });
 
diff --git a/test/nuts/seeds/deploy.testlevel.seed.ts b/test/nuts/seeds/deploy.testlevel.seed.ts
index 64efd2542..4977348c9 100644
--- a/test/nuts/seeds/deploy.testlevel.seed.ts
+++ b/test/nuts/seeds/deploy.testlevel.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js';
 
@@ -17,7 +18,7 @@ context('Deploy testlevel NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
 
diff --git a/test/nuts/seeds/mpd.deploy.seed.ts b/test/nuts/seeds/mpd.deploy.seed.ts
index 3cf06d36e..21bde41a8 100644
--- a/test/nuts/seeds/mpd.deploy.seed.ts
+++ b/test/nuts/seeds/mpd.deploy.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 
 context('MPD Deploy NUTs', () => {
@@ -13,7 +14,7 @@ context('MPD Deploy NUTs', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: 'https://github.com/salesforcecli/sample-project-multiple-packages.git',
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
   });
 
diff --git a/test/nuts/seeds/mpd.retrieve.seed.ts b/test/nuts/seeds/mpd.retrieve.seed.ts
index 38fb65efa..3ebaaadb4 100644
--- a/test/nuts/seeds/mpd.retrieve.seed.ts
+++ b/test/nuts/seeds/mpd.retrieve.seed.ts
@@ -7,6 +7,7 @@
 
 import path from 'node:path';
 import fs from 'node:fs';
+import { fileURLToPath } from 'node:url';
 import { Dictionary } from '@salesforce/ts-types';
 import { SourceTestkit } from '@salesforce/source-testkit';
 
@@ -16,7 +17,7 @@ context('MPD Retrieve NUTs', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: 'https://github.com/salesforcecli/sample-project-multiple-packages.git',
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.trackGlobs(testkit.packageGlobs);
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/retrieve.manifest.seed.ts b/test/nuts/seeds/retrieve.manifest.seed.ts
index ea0c95957..e6bb5ecc7 100644
--- a/test/nuts/seeds/retrieve.manifest.seed.ts
+++ b/test/nuts/seeds/retrieve.manifest.seed.ts
@@ -6,9 +6,10 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url'; // DO NOT TOUCH. generateNuts.ts will insert these values
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { JsonMap } from '@salesforce/ts-types';
-import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js'; // DO NOT TOUCH. generateNuts.ts will insert these values
+import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js';
 
 // DO NOT TOUCH. generateNuts.ts will insert these values
 const REPO = TEST_REPOS_MAP.get('%REPO_URL%') as RepoConfig;
@@ -19,7 +20,7 @@ context('Retrieve manifest NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.trackGlobs(testkit.packageGlobs);
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/retrieve.metadata.seed.ts b/test/nuts/seeds/retrieve.metadata.seed.ts
index 18760288e..e0c0a36fe 100644
--- a/test/nuts/seeds/retrieve.metadata.seed.ts
+++ b/test/nuts/seeds/retrieve.metadata.seed.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { JsonMap } from '@salesforce/ts-types';
 import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js';
@@ -19,7 +20,7 @@ context('Retrieve metadata NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.trackGlobs(testkit.packageGlobs);
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/retrieve.packagenames.seed.ts b/test/nuts/seeds/retrieve.packagenames.seed.ts
index c3261e931..625296e56 100644
--- a/test/nuts/seeds/retrieve.packagenames.seed.ts
+++ b/test/nuts/seeds/retrieve.packagenames.seed.ts
@@ -6,6 +6,7 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { exec } from 'shelljs';
 
@@ -18,7 +19,7 @@ context('Retrieve packagenames NUTs', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: 'https://github.com/salesforcecli/sample-project-multiple-packages.git',
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
   });
diff --git a/test/nuts/seeds/retrieve.retrievetargetdir.seed.ts b/test/nuts/seeds/retrieve.retrievetargetdir.seed.ts
index ca97b2a51..b6622021f 100644
--- a/test/nuts/seeds/retrieve.retrievetargetdir.seed.ts
+++ b/test/nuts/seeds/retrieve.retrievetargetdir.seed.ts
@@ -5,6 +5,7 @@
  * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
  */
 
+import { fileURLToPath } from 'node:url';
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { JsonMap } from '@salesforce/ts-types';
 import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js';
@@ -18,7 +19,7 @@ context('Retrieve metadata NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.trackGlobs(testkit.packageGlobs);
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });
diff --git a/test/nuts/seeds/retrieve.sourcepath.seed.ts b/test/nuts/seeds/retrieve.sourcepath.seed.ts
index d5e611575..a051a937a 100644
--- a/test/nuts/seeds/retrieve.sourcepath.seed.ts
+++ b/test/nuts/seeds/retrieve.sourcepath.seed.ts
@@ -6,9 +6,10 @@
  */
 
 import path from 'node:path';
+import { fileURLToPath } from 'node:url'; // DO NOT TOUCH. generateNuts.ts will insert these values
 import { SourceTestkit } from '@salesforce/source-testkit';
 import { JsonMap } from '@salesforce/ts-types';
-import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js'; // DO NOT TOUCH. generateNuts.ts will insert these values
+import { RepoConfig, TEST_REPOS_MAP } from '../testMatrix.js';
 
 // DO NOT TOUCH. generateNuts.ts will insert these values
 const REPO = TEST_REPOS_MAP.get('%REPO_URL%') as RepoConfig;
@@ -19,7 +20,7 @@ context('Retrieve Sourcepath NUTs [name: %REPO_NAME%]', () => {
   before(async () => {
     testkit = await SourceTestkit.create({
       repository: REPO.gitUrl,
-      nut: __filename,
+      nut: fileURLToPath(import.meta.url),
     });
     await testkit.trackGlobs(testkit.packageGlobs);
     await testkit.deploy({ args: `--sourcepath ${testkit.packageNames.join(',')}` });