diff --git a/tests/integration/update_cluster/complex/cloudformation.json b/tests/integration/update_cluster/complex/cloudformation.json
index bdf9a67160..7d35d25ee5 100644
--- a/tests/integration/update_cluster/complex/cloudformation.json
+++ b/tests/integration/update_cluster/complex/cloudformation.json
@@ -673,6 +673,36 @@
         "TransitGatewayId": "tgw-123456"
       }
     },
+    "AWSEC2Routepublicuseast1aprivate19216811032": {
+      "Type": "AWS::EC2::Route",
+      "Properties": {
+        "RouteTableId": {
+          "Ref": "AWSEC2RouteTableprivateustest1acomplexexamplecom"
+        },
+        "DestinationCidrBlock": "192.168.1.10/32",
+        "TransitGatewayId": "tgw-0123456"
+      }
+    },
+    "AWSEC2Routepublicuseast1autilitycomplexexamplecom550016": {
+      "Type": "AWS::EC2::Route",
+      "Properties": {
+        "RouteTableId": {
+          "Ref": "AWSEC2RouteTablecomplexexamplecom"
+        },
+        "DestinationCidrBlock": "5.5.0.0/16",
+        "VpcPeeringConnectionId": "pcx-0123abc"
+      }
+    },
+    "AWSEC2Routepublicustest1acomplexexamplecom1010016": {
+      "Type": "AWS::EC2::Route",
+      "Properties": {
+        "RouteTableId": {
+          "Ref": "AWSEC2RouteTablecomplexexamplecom"
+        },
+        "DestinationCidrBlock": "10.1.0.0/16",
+        "VpcPeeringConnectionId": "pcx-abcdef"
+      }
+    },
     "AWSEC2SecurityGroupEgressfrommasterscomplexexamplecomegressall0to00": {
       "Type": "AWS::EC2::SecurityGroupEgress",
       "Properties": {
diff --git a/tests/integration/update_cluster/complex/data/aws_s3_bucket_object_cluster-completed.spec_content b/tests/integration/update_cluster/complex/data/aws_s3_bucket_object_cluster-completed.spec_content
index 5c7b3f04a5..c8d16e91c6 100644
--- a/tests/integration/update_cluster/complex/data/aws_s3_bucket_object_cluster-completed.spec_content
+++ b/tests/integration/update_cluster/complex/data/aws_s3_bucket_object_cluster-completed.spec_content
@@ -202,16 +202,25 @@ spec:
   - pl-66666666
   sshKeyName: ""
   subnets:
-  - cidr: 172.20.32.0/19
+  - additionalRoutes:
+    - cidr: 10.1.0.0/16
+      target: pcx-abcdef
+    cidr: 172.20.32.0/19
     name: us-test-1a
     type: Public
     zone: us-test-1a
-  - cidr: 172.20.64.0/19
+  - additionalRoutes:
+    - cidr: 192.168.1.10/32
+      target: tgw-0123456
+    cidr: 172.20.64.0/19
     egress: tgw-123456
     name: us-east-1a-private
     type: Private
     zone: us-test-1a
-  - cidr: 172.20.96.0/19
+  - additionalRoutes:
+    - cidr: 5.5.0.0/16
+      target: pcx-0123abc
+    cidr: 172.20.96.0/19
     name: us-east-1a-utility
     type: Utility
     zone: us-test-1a
diff --git a/tests/integration/update_cluster/complex/in-legacy-v1alpha2.yaml b/tests/integration/update_cluster/complex/in-legacy-v1alpha2.yaml
index 1fdfc1b266..b770c6664e 100644
--- a/tests/integration/update_cluster/complex/in-legacy-v1alpha2.yaml
+++ b/tests/integration/update_cluster/complex/in-legacy-v1alpha2.yaml
@@ -83,15 +83,24 @@ spec:
     name: us-test-1a
     type: Public
     zone: us-test-1a
+    additionalRoutes:
+    - cidr: "10.1.0.0/16"
+      target: "pcx-abcdef"
   - cidr: 172.20.64.0/19
     name: us-east-1a-private
     type: Private
     zone: us-test-1a
     egress: tgw-123456
+    additionalRoutes:
+    - cidr: "192.168.1.10/32"
+      target: "tgw-0123456"
   - cidr: 172.20.96.0/19
     name: us-east-1a-utility
     type: Utility
     zone: us-test-1a
+    additionalRoutes:
+    - cidr: "5.5.0.0/16"
+      target: "pcx-0123abc"
 
 ---
 
diff --git a/tests/integration/update_cluster/complex/in-v1alpha2.yaml b/tests/integration/update_cluster/complex/in-v1alpha2.yaml
index 794b36ce0d..ff457419ef 100644
--- a/tests/integration/update_cluster/complex/in-v1alpha2.yaml
+++ b/tests/integration/update_cluster/complex/in-v1alpha2.yaml
@@ -84,15 +84,24 @@ spec:
     name: us-test-1a
     type: Public
     zone: us-test-1a
+    additionalRoutes:
+    - cidr: "10.1.0.0/16"
+      target: "pcx-abcdef"
   - cidr: 172.20.64.0/19
     name: us-east-1a-private
     type: Private
     zone: us-test-1a
     egress: tgw-123456
+    additionalRoutes:
+    - cidr: "192.168.1.10/32"
+      target: "tgw-0123456"
   - cidr: 172.20.96.0/19
     name: us-east-1a-utility
     type: Utility
     zone: us-test-1a
+    additionalRoutes:
+    - cidr: "5.5.0.0/16"
+      target: "pcx-0123abc"
 
 ---
 
diff --git a/tests/integration/update_cluster/complex/kubernetes.tf b/tests/integration/update_cluster/complex/kubernetes.tf
index 3faf0059d1..5067c29c48 100644
--- a/tests/integration/update_cluster/complex/kubernetes.tf
+++ b/tests/integration/update_cluster/complex/kubernetes.tf
@@ -632,6 +632,24 @@ resource "aws_route" "route-private-us-test-1a-0-0-0-0--0" {
   transit_gateway_id     = "tgw-123456"
 }
 
+resource "aws_route" "route-public-us-east-1a-private-192-168-1-10--32" {
+  destination_cidr_block = "192.168.1.10/32"
+  route_table_id         = aws_route_table.private-us-test-1a-complex-example-com.id
+  transit_gateway_id     = "tgw-0123456"
+}
+
+resource "aws_route" "route-public-us-east-1a-utility-complex-example-com-5-5-0-0--16" {
+  destination_cidr_block    = "5.5.0.0/16"
+  route_table_id            = aws_route_table.complex-example-com.id
+  vpc_peering_connection_id = "pcx-0123abc"
+}
+
+resource "aws_route" "route-public-us-test-1a-complex-example-com-10-1-0-0--16" {
+  destination_cidr_block    = "10.1.0.0/16"
+  route_table_id            = aws_route_table.complex-example-com.id
+  vpc_peering_connection_id = "pcx-abcdef"
+}
+
 resource "aws_route53_record" "api-complex-example-com" {
   alias {
     evaluate_target_health = false