diff --git a/packages/amplify-util-mock/src/CFNParser/appsync-resource-processor.ts b/packages/amplify-util-mock/src/CFNParser/appsync-resource-processor.ts
index 6dbcd04b1f4..52c29d663c7 100644
--- a/packages/amplify-util-mock/src/CFNParser/appsync-resource-processor.ts
+++ b/packages/amplify-util-mock/src/CFNParser/appsync-resource-processor.ts
@@ -9,6 +9,7 @@ const CFN_DEFAULT_PARAMS = {
   'AWS::AccountId': '12345678910',
   'AWS::StackId': 'fake-stackId',
   'AWS::StackName': 'local-testing',
+  'AWS::URLSuffix': 'amazonaws.com',
 };
 
 const RESOLVER_TEMPLATE_LOCATION_PREFIX = 's3://${S3DeploymentBucket}/${S3DeploymentRootKey}/';
diff --git a/packages/amplify-util-mock/src/CFNParser/stack/index.ts b/packages/amplify-util-mock/src/CFNParser/stack/index.ts
index 413f99dbd58..c2c9fd4e32c 100644
--- a/packages/amplify-util-mock/src/CFNParser/stack/index.ts
+++ b/packages/amplify-util-mock/src/CFNParser/stack/index.ts
@@ -19,6 +19,7 @@ export const CFN_PSEUDO_PARAMS = {
   'AWS::AccountId': '12345678910',
   'AWS::StackId': 'fake-stackId',
   'AWS::StackName': 'local-testing',
+  'AWS::URLSuffix': 'amazonaws.com',
 };
 
 export function nestedStackHandler(
diff --git a/packages/amplify-util-mock/src/__tests__/utils/lambda/populate-cfn-params.test.ts b/packages/amplify-util-mock/src/__tests__/utils/lambda/populate-cfn-params.test.ts
index cb294200b6a..e6da9a7a9d3 100644
--- a/packages/amplify-util-mock/src/__tests__/utils/lambda/populate-cfn-params.test.ts
+++ b/packages/amplify-util-mock/src/__tests__/utils/lambda/populate-cfn-params.test.ts
@@ -77,6 +77,7 @@ describe('populate cfn params', () => {
       'AWS::AccountId': '1234',
       'AWS::StackId': 'arn:aws:cloudformation:us-test-1:1234:stack/my-test-stack',
       'AWS::StackName': 'test-stack-name',
+      'AWS::URLSuffix': 'amazonaws.com',
     });
   });
 
@@ -93,6 +94,7 @@ describe('populate cfn params', () => {
       'AWS::AccountId': '12345678910',
       'AWS::StackId': 'fake-stack-id',
       'AWS::StackName': 'local-testing',
+      'AWS::URLSuffix': 'amazonaws.com',
     });
   });
 
diff --git a/packages/amplify-util-mock/src/utils/lambda/populate-cfn-params.ts b/packages/amplify-util-mock/src/utils/lambda/populate-cfn-params.ts
index b878993eb51..45eb9264081 100644
--- a/packages/amplify-util-mock/src/utils/lambda/populate-cfn-params.ts
+++ b/packages/amplify-util-mock/src/utils/lambda/populate-cfn-params.ts
@@ -32,6 +32,7 @@ const getCfnPseudoParams = (): Record<string, string> => {
     'AWS::AccountId': accountId,
     'AWS::StackId': stackId,
     'AWS::StackName': stackName,
+    'AWS::URLSuffix': 'amazonaws.com',
   };
 };