diff --git a/lib/plugins/aws/customResources/resources/cognitoUserPool/handler.js b/lib/plugins/aws/customResources/resources/cognitoUserPool/handler.js
index 51e2805fd..bc74dce0c 100644
--- a/lib/plugins/aws/customResources/resources/cognitoUserPool/handler.js
+++ b/lib/plugins/aws/customResources/resources/cognitoUserPool/handler.js
@@ -25,6 +25,7 @@ function create(event, context) {
     addPermission({
       functionName: FunctionName,
       userPoolName: UserPoolName,
+      partition: Partition,
       region: Region,
       accountId: AccountId,
       userPoolId: userPool.Id,
diff --git a/lib/plugins/aws/customResources/resources/cognitoUserPool/lib/permissions.js b/lib/plugins/aws/customResources/resources/cognitoUserPool/lib/permissions.js
index d29f3fe36..d88233343 100644
--- a/lib/plugins/aws/customResources/resources/cognitoUserPool/lib/permissions.js
+++ b/lib/plugins/aws/customResources/resources/cognitoUserPool/lib/permissions.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const Lambda = require('aws-sdk/clients/lambda');
-const { getPartition } = require('../../utils');
 
 function getStatementId(functionName, userPoolName) {
   const normalizedUserPoolName = userPoolName.toLowerCase().replace(/[.:*\s]/g, '');
@@ -13,9 +12,8 @@ function getStatementId(functionName, userPoolName) {
 }
 
 function addPermission(config) {
-  const { functionName, userPoolName, region, accountId, userPoolId } = config;
+  const { functionName, userPoolName, partition, region, accountId, userPoolId } = config;
   const lambda = new Lambda({ region });
-  const partition = getPartition(region);
   const params = {
     Action: 'lambda:InvokeFunction',
     FunctionName: functionName,
diff --git a/lib/plugins/aws/customResources/resources/eventBridge/handler.js b/lib/plugins/aws/customResources/resources/eventBridge/handler.js
index 912c9f4bf..cf5dcadb0 100644
--- a/lib/plugins/aws/customResources/resources/eventBridge/handler.js
+++ b/lib/plugins/aws/customResources/resources/eventBridge/handler.js
@@ -30,6 +30,7 @@ function create(event, context) {
 
   return addPermission({
     functionName: FunctionName,
+    partition: Partition,
     region: Region,
     accountId: AccountId,
     eventBus: EventBridgeConfig.EventBus,
diff --git a/lib/plugins/aws/customResources/resources/eventBridge/lib/permissions.js b/lib/plugins/aws/customResources/resources/eventBridge/lib/permissions.js
index 8e4104709..be4094d33 100644
--- a/lib/plugins/aws/customResources/resources/eventBridge/lib/permissions.js
+++ b/lib/plugins/aws/customResources/resources/eventBridge/lib/permissions.js
@@ -2,7 +2,6 @@
 
 const AWS = require('aws-sdk');
 const { getEventBusName } = require('./utils');
-const { getPartition } = require('../../utils');
 
 function getStatementId(functionName, ruleName) {
   const normalizedRuleName = ruleName.toLowerCase().replace(/[.:*]/g, '');
@@ -14,9 +13,8 @@ function getStatementId(functionName, ruleName) {
 }
 
 function addPermission(config) {
-  const { functionName, region, accountId, eventBus, ruleName } = config;
+  const { functionName, partition, region, accountId, eventBus, ruleName } = config;
   const lambda = new AWS.Lambda({ region });
-  const partition = getPartition(region);
   let SourceArn = `arn:${partition}:events:${region}:${accountId}:rule/${ruleName}`;
   if (eventBus) {
     const eventBusName = getEventBusName(eventBus);
diff --git a/lib/plugins/aws/customResources/resources/s3/handler.js b/lib/plugins/aws/customResources/resources/s3/handler.js
index 01a10f7a7..20de80941 100644
--- a/lib/plugins/aws/customResources/resources/s3/handler.js
+++ b/lib/plugins/aws/customResources/resources/s3/handler.js
@@ -24,6 +24,7 @@ function create(event, context) {
   return addPermission({
     functionName: FunctionName,
     bucketName: BucketName,
+    partition: Partition,
     region: Region,
   }).then(() =>
     updateConfiguration({
diff --git a/lib/plugins/aws/customResources/resources/s3/lib/permissions.js b/lib/plugins/aws/customResources/resources/s3/lib/permissions.js
index 7e8a6c436..60ccd63ee 100644
--- a/lib/plugins/aws/customResources/resources/s3/lib/permissions.js
+++ b/lib/plugins/aws/customResources/resources/s3/lib/permissions.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const AWS = require('aws-sdk');
-const { getPartition } = require('../../utils');
 
 function getStatementId(functionName, bucketName) {
   const normalizedBucketName = bucketName.replace(/[.:*]/g, '');
@@ -13,9 +12,8 @@ function getStatementId(functionName, bucketName) {
 }
 
 function addPermission(config) {
-  const { functionName, bucketName, region } = config;
+  const { functionName, bucketName, partition, region } = config;
   const lambda = new AWS.Lambda({ region });
-  const partition = getPartition(region);
   const payload = {
     Action: 'lambda:InvokeFunction',
     FunctionName: functionName,
diff --git a/lib/plugins/aws/customResources/resources/utils.js b/lib/plugins/aws/customResources/resources/utils.js
index 970fd6e86..e855cd5b6 100644
--- a/lib/plugins/aws/customResources/resources/utils.js
+++ b/lib/plugins/aws/customResources/resources/utils.js
@@ -73,16 +73,6 @@ function getEnvironment(context) {
   };
 }
 
-function getPartition(region) {
-  let partition = 'aws';
-  if (region && /^cn-/.test(region)) {
-    partition = 'aws-cn';
-  } else if (region && /^us-gov-/.test(region)) {
-    partition = 'aws-us-gov';
-  }
-  return partition;
-}
-
 function handlerWrapper(handler, PhysicalResourceId) {
   return (event, context, callback) => {
     // extend the `event` object to include the PhysicalResourceId
@@ -105,7 +95,6 @@ module.exports = {
   response,
   getEnvironment,
   getLambdaArn,
-  getPartition,
   handlerWrapper,
   wait,
 };
diff --git a/lib/plugins/aws/customResources/resources/utils.test.js b/lib/plugins/aws/customResources/resources/utils.test.js
index 5e87ed165..aa42c4eb6 100644
--- a/lib/plugins/aws/customResources/resources/utils.test.js
+++ b/lib/plugins/aws/customResources/resources/utils.test.js
@@ -2,7 +2,7 @@
 
 // eslint-disable-next-line import/no-extraneous-dependencies
 const { expect } = require('chai');
-const { getLambdaArn, getEnvironment, getPartition } = require('./utils');
+const { getLambdaArn, getEnvironment } = require('./utils');
 
 describe('#getLambdaArn()', () => {
   it('should return the Lambda arn', () => {
@@ -119,30 +119,3 @@ describe('#getEnvironment() china region', () => {
     });
   });
 });
-
-describe('#getPartition() public', () => {
-  it('should return the partition for public region', () => {
-    const region = 'us-east-1';
-    const partition = getPartition(region);
-
-    expect(partition).to.equal('aws');
-  });
-});
-
-describe('#getPartition() china', () => {
-  it('should return the partition for china region', () => {
-    const region = 'cn-north-1';
-    const partition = getPartition(region);
-
-    expect(partition).to.equal('aws-cn');
-  });
-});
-
-describe('#getPartition() govcloud', () => {
-  it('should return the partition for govcloud region', () => {
-    const region = 'us-gov-west-1';
-    const partition = getPartition(region);
-
-    expect(partition).to.equal('aws-us-gov');
-  });
-});