diff --git a/packages/aws-cdk-lib/aws-rds/lib/cluster-engine.ts b/packages/aws-cdk-lib/aws-rds/lib/cluster-engine.ts
index 7a8281b2475d5..0d746e7587753 100644
--- a/packages/aws-cdk-lib/aws-rds/lib/cluster-engine.ts
+++ b/packages/aws-cdk-lib/aws-rds/lib/cluster-engine.ts
@@ -725,17 +725,35 @@ export class AuroraPostgresEngineVersion {
    * @deprecated Version 10.14 is no longer supported by Amazon RDS.
    */
   public static readonly VER_10_14 = AuroraPostgresEngineVersion.of('10.14', '10', { s3Import: true, s3Export: true });
-  /** Version "10.16". */
+  /**
+   *  Version "10.16".
+   * @deprecated Version 10.16 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_16 = AuroraPostgresEngineVersion.of('10.16', '10', { s3Import: true, s3Export: true });
-  /** Version "10.17". */
+  /**
+   *  Version "10.17".
+   * @deprecated Version 10.17 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_17 = AuroraPostgresEngineVersion.of('10.17', '10', { s3Import: true, s3Export: true });
-  /** Version "10.18". */
+  /**
+   *  Version "10.18".
+   * @deprecated Version 10.18 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_18 = AuroraPostgresEngineVersion.of('10.18', '10', { s3Import: true, s3Export: true });
-  /** Version "10.19". */
+  /**
+   *  Version "10.19".
+   * @deprecated Version 10.19 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_19 = AuroraPostgresEngineVersion.of('10.19', '10', { s3Import: true, s3Export: true });
-  /** Version "10.20". */
+  /**
+   *  Version "10.20".
+   * @deprecated Version 10.20 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_20 = AuroraPostgresEngineVersion.of('10.20', '10', { s3Import: true, s3Export: true });
-  /** Version "10.21". */
+  /**
+   *  Version "10.21".
+   * @deprecated Version 10.21 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_10_21 = AuroraPostgresEngineVersion.of('10.21', '10', { s3Import: true, s3Export: true });
   /**
    *  Version "11.4".
@@ -759,15 +777,30 @@ export class AuroraPostgresEngineVersion {
   public static readonly VER_11_8 = AuroraPostgresEngineVersion.of('11.8', '11', { s3Import: true, s3Export: true });
   /** Version "11.9". */
   public static readonly VER_11_9 = AuroraPostgresEngineVersion.of('11.9', '11', { s3Import: true, s3Export: true });
-  /** Version "11.11". */
+  /**
+   *  Version "11.11".
+   * @deprecated Version 11.11 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_11_11 = AuroraPostgresEngineVersion.of('11.11', '11', { s3Import: true, s3Export: true });
-  /** Version "11.12". */
+  /**
+   *  Version "11.12".
+   * @deprecated Version 11.12 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_11_12 = AuroraPostgresEngineVersion.of('11.12', '11', { s3Import: true, s3Export: true });
-  /** Version "11.13". */
+  /**
+   *  Version "11.13".
+   * @deprecated Version 11.13 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_11_13 = AuroraPostgresEngineVersion.of('11.13', '11', { s3Import: true, s3Export: true });
-  /** Version "11.14". */
+  /**
+   *  Version "11.14".
+   * @deprecated Version 11.14 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_11_14 = AuroraPostgresEngineVersion.of('11.14', '11', { s3Import: true, s3Export: true });
-  /** Version "11.15". */
+  /**
+   *  Version "11.15".
+   * @deprecated Version 11.15 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_11_15 = AuroraPostgresEngineVersion.of('11.15', '11', { s3Import: true, s3Export: true });
   /** Version "11.16". */
   public static readonly VER_11_16 = AuroraPostgresEngineVersion.of('11.16', '11', { s3Import: true, s3Export: true });
@@ -777,17 +810,36 @@ export class AuroraPostgresEngineVersion {
   public static readonly VER_11_18 = AuroraPostgresEngineVersion.of('11.18', '11', { s3Import: true, s3Export: true });
   /** Version "11.19". */
   public static readonly VER_11_19 = AuroraPostgresEngineVersion.of('11.19', '11', { s3Import: true, s3Export: true });
-  /** Version "12.4". */
+  /** Version "11.20". */
+  public static readonly VER_11_20 = AuroraPostgresEngineVersion.of('11.20', '11', { s3Import: true, s3Export: true });
+  /** Version "11.21". */
+  public static readonly VER_11_21 = AuroraPostgresEngineVersion.of('11.21', '11', { s3Import: true, s3Export: true });
+  /**
+   *  Version "12.4".
+   * @deprecated Version 12.4 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_12_4 = AuroraPostgresEngineVersion.of('12.4', '12', { s3Import: true, s3Export: true });
-  /** Version "12.6". */
+  /**
+   *  Version "12.6".
+   * @deprecated Version 12.6 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_12_6 = AuroraPostgresEngineVersion.of('12.6', '12', { s3Import: true, s3Export: true });
-  /** Version "12.7". */
+  /**
+   *  Version "12.7".
+   * @deprecated Version 12.7 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_12_7 = AuroraPostgresEngineVersion.of('12.7', '12', { s3Import: true, s3Export: true });
-  /** Version "12.8". */
+  /**
+   *  Version "12.8".
+   * @deprecated Version 12.8 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_12_8 = AuroraPostgresEngineVersion.of('12.8', '12', { s3Import: true, s3Export: true });
   /** Version "12.9". */
   public static readonly VER_12_9 = AuroraPostgresEngineVersion.of('12.9', '12', { s3Import: true, s3Export: true });
-  /** Version "12.10". */
+  /**
+   *  Version "12.10".
+   * @deprecated Version 12.10 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_12_10 = AuroraPostgresEngineVersion.of('12.10', '12', { s3Import: true, s3Export: true });
   /** Version "12.11". */
   public static readonly VER_12_11 = AuroraPostgresEngineVersion.of('12.11', '12', { s3Import: true, s3Export: true });
@@ -797,13 +849,29 @@ export class AuroraPostgresEngineVersion {
   public static readonly VER_12_13 = AuroraPostgresEngineVersion.of('12.13', '12', { s3Import: true, s3Export: true });
   /** Version "12.14". */
   public static readonly VER_12_14 = AuroraPostgresEngineVersion.of('12.14', '12', { s3Import: true, s3Export: true });
-  /** Version "13.3". */
+  /** Version "12.15". */
+  public static readonly VER_12_15 = AuroraPostgresEngineVersion.of('12.15', '12', { s3Import: true, s3Export: true });
+  /** Version "12.16". */
+  public static readonly VER_12_16 = AuroraPostgresEngineVersion.of('12.16', '12', { s3Import: true, s3Export: true });
+  /**
+   *  Version "13.3".
+   * @deprecated Version 13.3 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_13_3 = AuroraPostgresEngineVersion.of('13.3', '13', { s3Import: true, s3Export: true });
-  /** Version "13.4". */
+  /**
+   *  Version "13.4".
+   * @deprecated Version 13.4 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_13_4 = AuroraPostgresEngineVersion.of('13.4', '13', { s3Import: true, s3Export: true });
-  /** Version "13.5". */
+  /**
+   *  Version "13.5".
+   * @deprecated Version 13.5 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_13_5 = AuroraPostgresEngineVersion.of('13.5', '13', { s3Import: true, s3Export: true });
-  /** Version "13.6". */
+  /**
+   *  Version "13.6".
+   * @deprecated Version 13.6 is no longer supported by Amazon RDS.
+   */
   public static readonly VER_13_6 = AuroraPostgresEngineVersion.of('13.6', '13', { s3Import: true, s3Export: true });
   /** Version "13.7". */
   public static readonly VER_13_7 = AuroraPostgresEngineVersion.of('13.7', '13', { s3Import: true, s3Export: true });
@@ -813,6 +881,10 @@ export class AuroraPostgresEngineVersion {
   public static readonly VER_13_9 = AuroraPostgresEngineVersion.of('13.9', '13', { s3Import: true, s3Export: true });
   /** Version "13.10". */
   public static readonly VER_13_10 = AuroraPostgresEngineVersion.of('13.10', '13', { s3Import: true, s3Export: true });
+  /** Version "13.11". */
+  public static readonly VER_13_11 = AuroraPostgresEngineVersion.of('13.11', '13', { s3Import: true, s3Export: true });
+  /** Version "13.12". */
+  public static readonly VER_13_12 = AuroraPostgresEngineVersion.of('13.12', '13', { s3Import: true, s3Export: true });
   /** Version "14.3". */
   public static readonly VER_14_3 = AuroraPostgresEngineVersion.of('14.3', '14', { s3Import: true, s3Export: true });
   /**
@@ -828,10 +900,14 @@ export class AuroraPostgresEngineVersion {
   public static readonly VER_14_7 = AuroraPostgresEngineVersion.of('14.7', '14', { s3Import: true, s3Export: true });
   /** Version "14.8". */
   public static readonly VER_14_8 = AuroraPostgresEngineVersion.of('14.8', '14', { s3Import: true, s3Export: true });
+  /** Version "14.9". */
+  public static readonly VER_14_9 = AuroraPostgresEngineVersion.of('14.9', '14', { s3Import: true, s3Export: true });
   /** Version "15.2". */
   public static readonly VER_15_2 = AuroraPostgresEngineVersion.of('15.2', '15', { s3Import: true, s3Export: true });
   /** Version "15.3". */
   public static readonly VER_15_3 = AuroraPostgresEngineVersion.of('15.3', '15', { s3Import: true, s3Export: true });
+  /** Version "15.4". */
+  public static readonly VER_15_4 = AuroraPostgresEngineVersion.of('15.4', '15', { s3Import: true, s3Export: true })
 
   /**
    * Create a new AuroraPostgresEngineVersion with an arbitrary version.