diff --git a/cdk/lib/constructs/cron-lambda-construct.ts b/cdk/lib/constructs/cron-lambda-construct.ts
index 124df4f..f77a43f 100644
--- a/cdk/lib/constructs/cron-lambda-construct.ts
+++ b/cdk/lib/constructs/cron-lambda-construct.ts
@@ -19,7 +19,7 @@ export interface CronLambdaConstructProps {
 
 export class CronLambdaConstruct extends Construct {
   readonly lambda_1G: IFunction;
-  readonly lambda_2G: IFunction;
+  readonly lambda_4G: IFunction;
 
   constructor(scope: Construct, id: string, props: CronLambdaConstructProps) {
     super(scope, id);
@@ -54,12 +54,12 @@ export class CronLambdaConstruct extends Construct {
       memorySize: 1024,
     });
 
-    this.lambda_2G = new Function(this, 'CronLambda_2G', {
+    this.lambda_4G = new Function(this, 'CronLambda_4G', {
       ...lambdaBaseProps,
-      memorySize: 1024 * 2,
+      memorySize: 1024 * 4,
     });
 
-    for (const fn of [this.lambda_1G, this.lambda_2G]) {
+    for (const fn of [this.lambda_1G, this.lambda_4G]) {
       props.dataBucket.grantRead(fn, 'raw/LH_Public_Data/flightschedules/*');
       props.dataBucket.grantWrite(fn, 'raw/LH_Public_Data/*');
       props.dataBucket.grantWrite(fn, 'raw/ourairports_data/*');
diff --git a/cdk/lib/constructs/sfn-construct.ts b/cdk/lib/constructs/sfn-construct.ts
index c4db73c..5cf6abc 100644
--- a/cdk/lib/constructs/sfn-construct.ts
+++ b/cdk/lib/constructs/sfn-construct.ts
@@ -17,7 +17,7 @@ import { LambdaInvoke } from 'aws-cdk-lib/aws-stepfunctions-tasks';
 export interface SfnConstructProps {
   dataBucket: IBucket;
   cronLambda_1G: IFunction;
-  cronLambda_2G: IFunction;
+  cronLambda_4G: IFunction;
   webhookUrl: cdk.SecretValue;
 }
 
@@ -105,7 +105,7 @@ export class SfnConstruct extends Construct {
           // region conversion
           .otherwise(
             new LambdaInvoke(this, 'ConvertSchedulesTask', {
-              lambdaFunction: props.cronLambda_2G,
+              lambdaFunction: props.cronLambda_4G,
               payload: TaskInput.fromObject({
                 'action': 'convert_flight_schedules',
                 'params': {
@@ -121,7 +121,7 @@ export class SfnConstruct extends Construct {
               retryOnServiceExceptions: true,
             })
               .next(new LambdaInvoke(this, 'ConvertFlightsTask', {
-                lambdaFunction: props.cronLambda_2G,
+                lambdaFunction: props.cronLambda_4G,
                 payload: TaskInput.fromObject({
                   'action': 'convert_flights',
                   'params': {
@@ -137,7 +137,7 @@ export class SfnConstruct extends Construct {
                 retryOnServiceExceptions: true,
               }))
               .next(new LambdaInvoke(this, 'UpdateAllegrisFeedTask', {
-                lambdaFunction: props.cronLambda_2G,
+                lambdaFunction: props.cronLambda_4G,
                 payload: TaskInput.fromObject({
                   'action': 'update_allegris_feed',
                   'params': {
@@ -152,7 +152,7 @@ export class SfnConstruct extends Construct {
                 retryOnServiceExceptions: true,
               }))
               .next(new LambdaInvoke(this, 'UpdateMetadataTask', {
-                lambdaFunction: props.cronLambda_2G,
+                lambdaFunction: props.cronLambda_4G,
                 payload: TaskInput.fromObject({
                   'action': 'update_metadata',
                   'params': {
diff --git a/cdk/lib/stacks/cron-stack.ts b/cdk/lib/stacks/cron-stack.ts
index 944916c..cf5baee 100644
--- a/cdk/lib/stacks/cron-stack.ts
+++ b/cdk/lib/stacks/cron-stack.ts
@@ -23,7 +23,7 @@ export class CronStack extends cdk.Stack {
     const sfn = new SfnConstruct(this, 'SFN', {
       dataBucket: props.dataBucket,
       cronLambda_1G: cronLambda.lambda_1G,
-      cronLambda_2G: cronLambda.lambda_2G,
+      cronLambda_4G: cronLambda.lambda_4G,
       webhookUrl: cdk.SecretValue.cfnParameter(new cdk.CfnParameter(this, 'webhookUrl', {
         type: 'String',
         noEcho: true,