diff --git a/.gitallowed b/.gitallowed
index 6ac984df8735b..1ba8238684731 100644
--- a/.gitallowed
+++ b/.gitallowed
@@ -30,6 +30,7 @@ account: '924023996002'
 account: '919366029133' #cn-north-1
 account: '919830735681' #cn-northwest-1
 account: '909464085924' #ap-southeast-3
+account: '564877687649' #il-central-1
 
 # The account IDs of password rotation applications of Serverless Application Repository
 # https://docs.aws.amazon.com/secretsmanager/latest/userguide/enable-rotation-rds.html
diff --git a/packages/aws-cdk-lib/region-info/build-tools/fact-tables.ts b/packages/aws-cdk-lib/region-info/build-tools/fact-tables.ts
index 6fe55f7893fcf..68b18dc2a33be 100644
--- a/packages/aws-cdk-lib/region-info/build-tools/fact-tables.ts
+++ b/packages/aws-cdk-lib/region-info/build-tools/fact-tables.ts
@@ -207,6 +207,7 @@ export const APPMESH_ECR_ACCOUNTS: { [region: string]: string } = {
   'eu-west-1': '840364872350',
   'eu-west-2': '840364872350',
   'eu-west-3': '840364872350',
+  'il-central-1': '564877687649',
   'me-south-1': '772975370895',
   'sa-east-1': '840364872350',
   'us-east-1': '840364872350',