diff --git a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
index 7b89924feb125..ec5f2b91e17e7 100644
--- a/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
+++ b/packages/@aws-cdk/aws-ec2/lib/instance-types.ts
@@ -466,6 +466,16 @@ export enum InstanceClass {
    */
   G4DN = 'g4dn',
 
+  /**
+   * Graphics-optimized instances, 5th generation
+   */
+  GRAPHICS5 = 'g5',
+
+  /**
+   * Graphics-optimized instances, 5th generation
+   */
+  G5 = 'g5',
+
   /**
    * Parallel-processing optimized instances, 2nd generation
    */
@@ -666,6 +676,11 @@ export enum InstanceSize {
    */
   XLARGE32 = '32xlarge',
 
+  /**
+   * Instance size XLARGE48 (48xlarge)
+   */
+  XLARGE48 = '48xlarge',
+
   /**
    * Instance size METAL (metal)
    */