diff --git a/lambdas/functions/ami-housekeeper/vitest.config.ts b/lambdas/functions/ami-housekeeper/vitest.config.ts
index 2e216bfc57..31e7d66a1b 100644
--- a/lambdas/functions/ami-housekeeper/vitest.config.ts
+++ b/lambdas/functions/ami-housekeeper/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],
diff --git a/lambdas/functions/control-plane/vitest.config.ts b/lambdas/functions/control-plane/vitest.config.ts
index 63d1653fd7..7abf8c629d 100644
--- a/lambdas/functions/control-plane/vitest.config.ts
+++ b/lambdas/functions/control-plane/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],
diff --git a/lambdas/functions/gh-agent-syncer/vitest.config.ts b/lambdas/functions/gh-agent-syncer/vitest.config.ts
index 41a97a389a..c3d192d9fd 100644
--- a/lambdas/functions/gh-agent-syncer/vitest.config.ts
+++ b/lambdas/functions/gh-agent-syncer/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],
diff --git a/lambdas/functions/termination-watcher/vitest.config.ts b/lambdas/functions/termination-watcher/vitest.config.ts
index 2e216bfc57..31e7d66a1b 100644
--- a/lambdas/functions/termination-watcher/vitest.config.ts
+++ b/lambdas/functions/termination-watcher/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],
diff --git a/lambdas/functions/webhook/vitest.config.ts b/lambdas/functions/webhook/vitest.config.ts
index 2e216bfc57..31e7d66a1b 100644
--- a/lambdas/functions/webhook/vitest.config.ts
+++ b/lambdas/functions/webhook/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],
diff --git a/lambdas/libs/aws-ssm-util/vitest.config.ts b/lambdas/libs/aws-ssm-util/vitest.config.ts
index 2e216bfc57..31e7d66a1b 100644
--- a/lambdas/libs/aws-ssm-util/vitest.config.ts
+++ b/lambdas/libs/aws-ssm-util/vitest.config.ts
@@ -1,9 +1,11 @@
+import { resolve } from 'path';
+
 import { mergeConfig } from 'vitest/config';
 import defaultConfig from '../../vitest.base.config';
 
 export default mergeConfig(defaultConfig, {
   test: {
-    setupFiles: ['../../aws-vitest-setup.ts'],
+    setupFiles: [resolve(__dirname, '../../aws-vitest-setup.ts')],
     coverage: {
       include: ['src/**/*.ts'],
       exclude: ['src/**/*.test.ts', 'src/**/*.d.ts'],