diff --git a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.alb.expected.json b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.alb.expected.json
index ae65d49847d54..b9f5d96ff4656 100644
--- a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.alb.expected.json
+++ b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.alb.expected.json
@@ -633,6 +633,7 @@
           "Ref": "HttpProxyPrivateApiA55E154D"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
diff --git a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.http-proxy.expected.json b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.http-proxy.expected.json
index 378e7b2395f03..0e53d0a223e42 100644
--- a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.http-proxy.expected.json
+++ b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.http-proxy.expected.json
@@ -117,6 +117,7 @@
           "Ref": "LambdaProxyApi67594471"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
@@ -185,6 +186,7 @@
           "Ref": "HttpProxyApiD0217C67"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
diff --git a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.lambda-proxy.expected.json b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.lambda-proxy.expected.json
index 58e37b0f64e0a..7963d3534e099 100644
--- a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.lambda-proxy.expected.json
+++ b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.lambda-proxy.expected.json
@@ -117,6 +117,7 @@
           "Ref": "LambdaProxyApi67594471"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
diff --git a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.nlb.expected.json b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.nlb.expected.json
index aed54a5a8395c..0a3241cdc8139 100644
--- a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.nlb.expected.json
+++ b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.nlb.expected.json
@@ -598,6 +598,7 @@
           "Ref": "HttpProxyPrivateApiA55E154D"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
diff --git a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.service-discovery.expected.json b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.service-discovery.expected.json
index 1aaf644336b8c..00e587f8ac85f 100644
--- a/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.service-discovery.expected.json
+++ b/packages/@aws-cdk/aws-apigatewayv2-integrations/test/http/integ.service-discovery.expected.json
@@ -602,6 +602,7 @@
           "Ref": "HttpProxyPrivateApiA55E154D"
         },
         "RouteKey": "$default",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",
diff --git a/packages/@aws-cdk/aws-apigatewayv2/lib/http/route.ts b/packages/@aws-cdk/aws-apigatewayv2/lib/http/route.ts
index 2252630930c27..5178281d08953 100644
--- a/packages/@aws-cdk/aws-apigatewayv2/lib/http/route.ts
+++ b/packages/@aws-cdk/aws-apigatewayv2/lib/http/route.ts
@@ -156,8 +156,6 @@ export class HttpRoute extends Resource implements IHttpRoute {
       ]));
     }
 
-    const authorizationType = authBindResult?.authorizationType === HttpAuthorizerType.NONE ? undefined : authBindResult?.authorizationType;
-
     if (authorizationScopes?.length === 0) {
       authorizationScopes = undefined;
     }
@@ -167,7 +165,7 @@ export class HttpRoute extends Resource implements IHttpRoute {
       routeKey: props.routeKey.key,
       target: `integrations/${integration.integrationId}`,
       authorizerId: authBindResult?.authorizerId,
-      authorizationType,
+      authorizationType: authBindResult?.authorizationType ?? HttpAuthorizerType.NONE, // must be explicitly NONE (not undefined) for stack updates to work correctly
       authorizationScopes,
     };
 
diff --git a/packages/@aws-cdk/aws-apigatewayv2/test/http/api.test.ts b/packages/@aws-cdk/aws-apigatewayv2/test/http/api.test.ts
index 25b0a5bca3189..12d2c68aa0ecb 100644
--- a/packages/@aws-cdk/aws-apigatewayv2/test/http/api.test.ts
+++ b/packages/@aws-cdk/aws-apigatewayv2/test/http/api.test.ts
@@ -429,6 +429,7 @@ describe('HttpApi', () => {
 
       expect(stack).toHaveResource('AWS::ApiGatewayV2::Route', {
         RouteKey: 'GET /chickens',
+        AuthorizationType: 'NONE',
         AuthorizerId: ABSENT,
       });
     });
diff --git a/packages/@aws-cdk/aws-apigatewayv2/test/http/route.test.ts b/packages/@aws-cdk/aws-apigatewayv2/test/http/route.test.ts
index 044d278e086e4..8de7d2ae7f1d6 100644
--- a/packages/@aws-cdk/aws-apigatewayv2/test/http/route.test.ts
+++ b/packages/@aws-cdk/aws-apigatewayv2/test/http/route.test.ts
@@ -30,6 +30,7 @@ describe('HttpRoute', () => {
           ],
         ],
       },
+      AuthorizationType: 'NONE',
     });
 
     expect(stack).toHaveResource('AWS::ApiGatewayV2::Integration', {
diff --git a/packages/@aws-cdk/aws-stepfunctions-tasks/test/apigateway/integ.call-http-api.expected.json b/packages/@aws-cdk/aws-stepfunctions-tasks/test/apigateway/integ.call-http-api.expected.json
index 56d4889af3d55..c6a6abaa89273 100644
--- a/packages/@aws-cdk/aws-stepfunctions-tasks/test/apigateway/integ.call-http-api.expected.json
+++ b/packages/@aws-cdk/aws-stepfunctions-tasks/test/apigateway/integ.call-http-api.expected.json
@@ -77,6 +77,7 @@
           "Ref": "MyHttpApi8AEAAC21"
         },
         "RouteKey": "ANY /",
+        "AuthorizationType": "NONE",
         "Target": {
           "Fn::Join": [
             "",