diff --git a/src/lambda/LambdaFunction.js b/src/lambda/LambdaFunction.js
index 148c8ed46..f0a3bd8bc 100644
--- a/src/lambda/LambdaFunction.js
+++ b/src/lambda/LambdaFunction.js
@@ -15,7 +15,7 @@ import {
 } from '../config/index.js'
 import { createUniqueId, splitHandlerPathAndName } from '../utils/index.js'
 
-const { entries } = Object
+const { entries, fromEntries } = Object
 const { ceil } = Math
 
 export default class LambdaFunction {
@@ -97,7 +97,12 @@ export default class LambdaFunction {
     this.#verifySupportedRuntime()
 
     const env = {
-      ...(options.localEnvironmentVariables && process.env),
+      ...(options.localEnvironmentVariables
+        ? process.env
+        : // we always copy all AWS_xxxx environment variables over from local env
+          fromEntries(
+            entries(process.env).filter(([key]) => key.startsWith('AWS_')),
+          )),
       ...this.#getAwsEnvVars(),
       ...provider.environment,
       ...functionDefinition.environment,
diff --git a/tests/lambda-run-mode/worker-threads/env-vars/worker-threads-env-vars.test.js b/tests/lambda-run-mode/worker-threads/env-vars/worker-threads-env-vars.test.js
index e725d4d78..f01693674 100644
--- a/tests/lambda-run-mode/worker-threads/env-vars/worker-threads-env-vars.test.js
+++ b/tests/lambda-run-mode/worker-threads/env-vars/worker-threads-env-vars.test.js
@@ -10,6 +10,8 @@ describe('run mode with worker threads', function desc() {
   beforeEach(() =>
     setup({
       env: {
+        AWS_ACCESS_KEY_ID: 'SHOULD_BE_SHARED',
+        AWS_FOOBAR: 'SHOULD_BE_SHARED',
         ENV_SHOULD_NOT_BE_SHARED: 'ENV_SHOULD_NOT_BE_SHARED',
       },
       servicePath: resolve(__dirname),
@@ -25,6 +27,9 @@ describe('run mode with worker threads', function desc() {
     assert.equal(response.status, 200)
 
     const json = await response.json()
+
+    assert.equal(json.env.AWS_ACCESS_KEY_ID, 'SHOULD_BE_SHARED')
+    assert.equal(json.env.AWS_FOOBAR, 'SHOULD_BE_SHARED')
     assert.equal(json.env.ENV_FUNCTIONS_FOO, 'ENV_FUNCTIONS_BAR')
     assert.equal(json.env.ENV_PROVIDER_FOO, 'ENV_PROVIDER_BAR')
     assert.equal(json.env.ENV_SHOULD_NOT_BE_SHARED, undefined)
diff --git a/tests/lambda-run-mode/worker-threads/local-env-vars/worker-threads-local-env-vars.test.js b/tests/lambda-run-mode/worker-threads/local-env-vars/worker-threads-local-env-vars.test.js
index f18ad0e6a..6d01cbdb8 100644
--- a/tests/lambda-run-mode/worker-threads/local-env-vars/worker-threads-local-env-vars.test.js
+++ b/tests/lambda-run-mode/worker-threads/local-env-vars/worker-threads-local-env-vars.test.js
@@ -10,6 +10,8 @@ describe('run mode with worker threads and --localEnvironmentVariables flag', fu
   beforeEach(() =>
     setup({
       env: {
+        AWS_ACCESS_KEY_ID: 'SHOULD_BE_SHARED',
+        AWS_FOOBAR: 'SHOULD_BE_SHARED',
         ENV_SHOULD_BE_SHARED: 'ENV_SHOULD_BE_SHARED',
       },
       servicePath: resolve(__dirname),
@@ -25,6 +27,9 @@ describe('run mode with worker threads and --localEnvironmentVariables flag', fu
     assert.equal(response.status, 200)
 
     const json = await response.json()
+
+    assert.equal(json.env.AWS_ACCESS_KEY_ID, 'SHOULD_BE_SHARED')
+    assert.equal(json.env.AWS_FOOBAR, 'SHOULD_BE_SHARED')
     assert.equal(json.env.ENV_FUNCTIONS_FOO, 'ENV_FUNCTIONS_BAR')
     assert.equal(json.env.ENV_PROVIDER_FOO, 'ENV_PROVIDER_BAR')
     assert.equal(json.env.ENV_SHOULD_BE_SHARED, 'ENV_SHOULD_BE_SHARED')