diff --git a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
index 11f472a75da90..4c7770d22c428 100644
--- a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
+++ b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
@@ -576,6 +576,16 @@ export enum InstanceClass {
    */
   X2IDN = 'x2idn',
 
+  /**
+   * Memory-intensive instances with higher network bandwith and single-threaded performance, Intel Xeon Scalable (Cascade Lake) processors
+   */
+  MEMORY_INTENSIVE_2_XTZ_INTEL = 'x2iezn',
+
+  /**
+   * Memory-intensive instances with higher network bandwith and single-threaded performance, Intel Xeon Scalable (Cascade Lake) processors
+   */
+  X2IEZN = 'x2iezn',
+
   /**
    * Instances with customizable hardware acceleration, 1st generation
    */