diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-docdb/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-docdb-cluster-rotation.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-docdb/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-docdb-cluster-rotation.template.json
index 9206ab9a17ce8..1271bf7c1dca2 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-docdb/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-docdb-cluster-rotation.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-docdb/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-docdb-cluster-rotation.template.json
@@ -501,7 +501,7 @@
      ]
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     },
     "SecretId": {
      "Ref": "DatabaseSecretAttachmentE5D1B020"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-rds-cluster-rotation.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-rds-cluster-rotation.template.json
index 794425c15d58a..ce8f516772028 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-rds-cluster-rotation.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/aws-cdk-rds-cluster-rotation.template.json
@@ -599,7 +599,7 @@
      ]
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     },
     "SecretId": {
      "Ref": "DatabaseSecretAttachmentE5D1B020"
@@ -920,7 +920,7 @@
      ]
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 7
+     "ScheduleExpression": "rate(7 days)"
     },
     "SecretId": {
      "Ref": "CustomRotationOptionsSecretAttachment697A23BF"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/tree.json
index 5c1665d932a55..301426d3607e9 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-rotation.lit.js.snapshot/tree.json
@@ -995,7 +995,7 @@
                                   ]
                                 },
                                 "rotationRules": {
-                                  "automaticallyAfterDays": 30
+                                  "scheduleExpression": "rate(30 days)"
                                 },
                                 "secretId": {
                                   "Ref": "DatabaseSecretAttachmentE5D1B020"
@@ -1520,7 +1520,7 @@
                                   ]
                                 },
                                 "rotationRules": {
-                                  "automaticallyAfterDays": 7
+                                  "scheduleExpression": "rate(7 days)"
                                 },
                                 "secretId": {
                                   "Ref": "CustomRotationOptionsSecretAttachment697A23BF"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/cdk-integ-cluster-snapshot.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/cdk-integ-cluster-snapshot.template.json
index ebe5672ba9069..9a5f1622df555 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/cdk-integ-cluster-snapshot.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/cdk-integ-cluster-snapshot.template.json
@@ -1403,7 +1403,7 @@
      ]
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     },
     "SecretId": {
      "Ref": "FromSnapshotSnapshotSecretAttachmentA3F619B8"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/tree.json
index 09ea615fb01f4..3b559b1a4d8bd 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.cluster-snapshot.js.snapshot/tree.json
@@ -2285,7 +2285,7 @@
                                   ]
                                 },
                                 "rotationRules": {
-                                  "automaticallyAfterDays": 30
+                                  "scheduleExpression": "rate(30 days)"
                                 },
                                 "secretId": {
                                   "Ref": "FromSnapshotSnapshotSecretAttachmentA3F619B8"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/aws-cdk-rds-instance.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/aws-cdk-rds-instance.template.json
index 0d3ab4158f690..a2f3e86d3ac10 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/aws-cdk-rds-instance.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/aws-cdk-rds-instance.template.json
@@ -616,7 +616,7 @@
      ]
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     },
     "SecretId": {
      "Ref": "InstanceSecretAttachment83BEE581"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/tree.json
index 5633e4c3d92f9..7f75600ca577a 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.instance.lit.js.snapshot/tree.json
@@ -1040,7 +1040,7 @@
                                   ]
                                 },
                                 "rotationRules": {
-                                  "automaticallyAfterDays": 30
+                                  "scheduleExpression": "rate(30 days)"
                                 },
                                 "secretId": {
                                   "Ref": "InstanceSecretAttachment83BEE581"
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
index 9670594fcd147..0a12dc325c73e 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
@@ -84,7 +84,7 @@
      "RotationType": "MySQLSingleUser"
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     }
    }
   },
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/tree.json
index 8b0ca324ebc1d..b9adb54e8c634 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation-custom-names.js.snapshot/tree.json
@@ -142,7 +142,7 @@
                           "excludeCharacters": " %+~`#$&*()|[]{}:;<>?!'/@\"\\"
                         },
                         "rotationRules": {
-                          "automaticallyAfterDays": 30
+                          "scheduleExpression": "rate(30 days)"
                         }
                       }
                     },
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
index 84e9db49cabdc..c9972ef2c6403 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/aws-cdk-rds-integ-secret-rotation.template.json
@@ -83,7 +83,7 @@
      "RotationType": "MySQLSingleUser"
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     }
    }
   },
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/tree.json
index 324bde72c38a6..4a400c436d2ea 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-rds/test/integ.serverless-cluster-secret-rotation.js.snapshot/tree.json
@@ -141,7 +141,7 @@
                           "excludeCharacters": " %+~`#$&*()|[]{}:;<>?!'/@\"\\"
                         },
                         "rotationRules": {
-                          "automaticallyAfterDays": 30
+                          "scheduleExpression": "rate(30 days)"
                         }
                       }
                     },
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/cdk-integ-secret-hosted-rotation.template.json b/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/cdk-integ-secret-hosted-rotation.template.json
index 100dd501b3c01..b435c2b732113 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/cdk-integ-secret-hosted-rotation.template.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/cdk-integ-secret-hosted-rotation.template.json
@@ -22,7 +22,7 @@
      "RotationType": "MySQLSingleUser"
     },
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     }
    }
   },
@@ -84,7 +84,7 @@
     },
     "RotateImmediatelyOnUpdate": false,
     "RotationRules": {
-     "AutomaticallyAfterDays": 30
+     "ScheduleExpression": "rate(30 days)"
     }
    }
   },
diff --git a/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/tree.json b/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/tree.json
index 8376f334fd4f0..c18789e6a490b 100644
--- a/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/tree.json
+++ b/packages/@aws-cdk-testing/framework-integ/test/aws-secretsmanager/test/integ.hosted-rotation.js.snapshot/tree.json
@@ -44,7 +44,7 @@
                           "excludeCharacters": " %+~`#$&*()|[]{}:;<>?!'/@\"\\"
                         },
                         "rotationRules": {
-                          "automaticallyAfterDays": 30
+                          "scheduleExpression": "rate(30 days)"
                         }
                       }
                     },
@@ -158,7 +158,7 @@
                         },
                         "rotateImmediatelyOnUpdate": false,
                         "rotationRules": {
-                          "automaticallyAfterDays": 30
+                          "scheduleExpression": "rate(30 days)"
                         }
                       }
                     },
diff --git a/packages/aws-cdk-lib/aws-docdb/test/cluster.test.ts b/packages/aws-cdk-lib/aws-docdb/test/cluster.test.ts
index 50b23408db59a..7b1ff72a62984 100644
--- a/packages/aws-cdk-lib/aws-docdb/test/cluster.test.ts
+++ b/packages/aws-cdk-lib/aws-docdb/test/cluster.test.ts
@@ -785,7 +785,7 @@ describe('DatabaseCluster', () => {
         'Fn::GetAtt': ['DatabaseRotationSingleUser65F55654', 'Outputs.RotationLambdaARN'],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 5,
+        ScheduleExpression: 'rate(5 days)',
       },
     });
   });
@@ -899,7 +899,7 @@ describe('DatabaseCluster', () => {
         'Fn::GetAtt': ['DatabaseRotation6B6E1D86', 'Outputs.RotationLambdaARN'],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 5,
+        ScheduleExpression: 'rate(5 days)',
       },
     });
   });
diff --git a/packages/aws-cdk-lib/aws-rds/test/cluster.test.ts b/packages/aws-cdk-lib/aws-rds/test/cluster.test.ts
index 0b3644fc7e1a7..c900952d76f79 100644
--- a/packages/aws-cdk-lib/aws-rds/test/cluster.test.ts
+++ b/packages/aws-cdk-lib/aws-rds/test/cluster.test.ts
@@ -1975,7 +1975,7 @@ describe('cluster', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
   });
@@ -2006,7 +2006,7 @@ describe('cluster', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -2058,7 +2058,7 @@ describe('cluster', () => {
     // THEN
     Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', {
       RotationRules: {
-        AutomaticallyAfterDays: 15,
+        ScheduleExpression: 'rate(15 days)',
       },
     });
 
@@ -2125,7 +2125,7 @@ describe('cluster', () => {
     // THEN
     Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', {
       RotationRules: {
-        AutomaticallyAfterDays: 15,
+        ScheduleExpression: 'rate(15 days)',
       },
     });
 
@@ -2231,7 +2231,7 @@ describe('cluster', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
       RotateImmediatelyOnUpdate: false,
     });
@@ -2266,7 +2266,7 @@ describe('cluster', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
       RotateImmediatelyOnUpdate: false,
     });
@@ -3439,7 +3439,7 @@ describe('cluster', () => {
     // THEN
     Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', {
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
   });
@@ -3493,7 +3493,7 @@ describe('cluster', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
diff --git a/packages/aws-cdk-lib/aws-rds/test/instance.test.ts b/packages/aws-cdk-lib/aws-rds/test/instance.test.ts
index 3e791f2a0ab81..92f9d41cccc1e 100644
--- a/packages/aws-cdk-lib/aws-rds/test/instance.test.ts
+++ b/packages/aws-cdk-lib/aws-rds/test/instance.test.ts
@@ -782,7 +782,7 @@ describe('instance', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
   });
@@ -810,7 +810,7 @@ describe('instance', () => {
         ],
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -858,7 +858,7 @@ describe('instance', () => {
     // THEN
     Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', {
       RotationRules: {
-        AutomaticallyAfterDays: 15,
+        ScheduleExpression: 'rate(15 days)',
       },
     });
 
@@ -921,7 +921,7 @@ describe('instance', () => {
     // THEN
     Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', {
       RotationRules: {
-        AutomaticallyAfterDays: 15,
+        ScheduleExpression: 'rate(15 days)',
       },
     });
 
diff --git a/packages/aws-cdk-lib/aws-secretsmanager/lib/rotation-schedule.ts b/packages/aws-cdk-lib/aws-secretsmanager/lib/rotation-schedule.ts
index ea2c432a2728a..32f89b50f8d9e 100644
--- a/packages/aws-cdk-lib/aws-secretsmanager/lib/rotation-schedule.ts
+++ b/packages/aws-cdk-lib/aws-secretsmanager/lib/rotation-schedule.ts
@@ -128,7 +128,6 @@ export class RotationSchedule extends Resource {
       );
     }
 
-    let automaticallyAfterDays: number | undefined;
     let scheduleExpression: string | undefined;
     if (props.automaticallyAfter) {
       const automaticallyAfterMillis = props.automaticallyAfter.toMilliseconds();
@@ -139,20 +138,15 @@ export class RotationSchedule extends Resource {
         if (automaticallyAfterMillis > Duration.days(1000).toMilliseconds()) {
           throw new Error(`automaticallyAfter must not be greater than 1000 days, got ${props.automaticallyAfter.toDays()} days`);
         }
-        if (props.automaticallyAfter.toHours() >= 24) {
-          automaticallyAfterDays = props.automaticallyAfter.toDays();
-        } else {
-          scheduleExpression = Schedule.rate(props.automaticallyAfter).expressionString;
-        }
+        scheduleExpression = Schedule.rate(props.automaticallyAfter).expressionString;
       }
     } else {
-      automaticallyAfterDays = 30;
+      scheduleExpression = Schedule.rate(Duration.days(30)).expressionString;
     }
 
     let rotationRules: CfnRotationSchedule.RotationRulesProperty | undefined;
-    if (automaticallyAfterDays !== undefined || scheduleExpression !== undefined) {
+    if (scheduleExpression) {
       rotationRules = {
-        automaticallyAfterDays,
         scheduleExpression,
       };
     }
diff --git a/packages/aws-cdk-lib/aws-secretsmanager/test/rotation-schedule.test.ts b/packages/aws-cdk-lib/aws-secretsmanager/test/rotation-schedule.test.ts
index 258bb76f5c106..dacfe106e0f8d 100644
--- a/packages/aws-cdk-lib/aws-secretsmanager/test/rotation-schedule.test.ts
+++ b/packages/aws-cdk-lib/aws-secretsmanager/test/rotation-schedule.test.ts
@@ -38,7 +38,7 @@ test('create a rotation schedule with a rotation Lambda', () => {
       ],
     },
     RotationRules: {
-      AutomaticallyAfterDays: 30,
+      ScheduleExpression: 'rate(30 days)',
     },
   });
 });
@@ -65,7 +65,7 @@ test('create a rotation schedule without immediate rotation', () => {
       Ref: 'SecretA720EF05',
     },
     RotationRules: {
-      AutomaticallyAfterDays: 30,
+      ScheduleExpression: 'rate(30 days)',
     },
     RotateImmediatelyOnUpdate: false,
   });
@@ -261,7 +261,7 @@ describe('hosted rotation', () => {
         ExcludeCharacters: " %+~`#$&*()|[]{}:;<>?!'/@\"\\",
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -328,7 +328,7 @@ describe('hosted rotation', () => {
         RotationType: 'PostgreSQLMultiUser',
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -411,7 +411,7 @@ describe('hosted rotation', () => {
         },
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -497,7 +497,7 @@ describe('hosted rotation', () => {
         },
       },
       RotationRules: {
-        AutomaticallyAfterDays: 30,
+        ScheduleExpression: 'rate(30 days)',
       },
     });
 
@@ -652,6 +652,37 @@ test('rotation schedule should have a dependency on lambda permissions', () => {
   });
 });
 
+test('automaticallyAfter set scheduleExpression with days duration', () => {
+  // GIVEN
+  const secret = new secretsmanager.Secret(stack, 'Secret');
+  const rotationLambda = new lambda.Function(stack, 'Lambda', {
+    runtime: lambda.Runtime.NODEJS_LATEST,
+    code: lambda.Code.fromInline('export.handler = event => event;'),
+    handler: 'index.handler',
+  });
+
+  // WHEN
+  new secretsmanager.RotationSchedule(stack, 'RotationSchedule', {
+    secret,
+    rotationLambda,
+    automaticallyAfter: Duration.days(90),
+  });
+
+  // THEN
+  Template.fromStack(stack).hasResourceProperties('AWS::SecretsManager::RotationSchedule', Match.objectEquals({
+    SecretId: { Ref: 'SecretA720EF05' },
+    RotationLambdaARN: {
+      'Fn::GetAtt': [
+        'LambdaD247545B',
+        'Arn',
+      ],
+    },
+    RotationRules: {
+      ScheduleExpression: 'rate(90 days)',
+    },
+  }));
+});
+
 test('automaticallyAfter set scheduleExpression with hours duration', () => {
   // GIVEN
   const secret = new secretsmanager.Secret(stack, 'Secret');
diff --git a/packages/aws-cdk-lib/aws-secretsmanager/test/secret-rotation.test.ts b/packages/aws-cdk-lib/aws-secretsmanager/test/secret-rotation.test.ts
index 0d24a57fed8ab..72f559bf7a265 100644
--- a/packages/aws-cdk-lib/aws-secretsmanager/test/secret-rotation.test.ts
+++ b/packages/aws-cdk-lib/aws-secretsmanager/test/secret-rotation.test.ts
@@ -63,7 +63,7 @@ test('secret rotation single user', () => {
       ],
     },
     RotationRules: {
-      AutomaticallyAfterDays: 30,
+      ScheduleExpression: 'rate(30 days)',
     },
   });