diff --git a/build.gradle b/build.gradle
index acac69b..72eb9ba 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,11 +22,11 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.sparkjava:spark-core:2.9.1'
-    implementation 'org.slf4j:slf4j-simple:1.7.25'
+    implementation 'com.sparkjava:spark-core:2.9.3'
+    implementation 'org.slf4j:slf4j-simple:1.7.36'
     implementation 'com.sparkjava:spark-template-jinjava:2.7.1'
-    implementation 'org.apache.httpcomponents:httpclient:4.5.11'
-    implementation 'com.adyen:adyen-java-api-library:17.2.0'
+    implementation 'org.apache.httpcomponents:httpclient:4.5.13'
+    implementation 'com.adyen:adyen-java-api-library:17.4.0'
 }
 
 jar {
diff --git a/src/main/java/checkout/Application.java b/src/main/java/checkout/Application.java
index 60058fb..32afcb2 100644
--- a/src/main/java/checkout/Application.java
+++ b/src/main/java/checkout/Application.java
@@ -87,7 +87,7 @@ public class Application {
         });
 
         post("/api/sessions", (req, res) -> {
-            CreateCheckoutSessionResponse response = checkoutService.checkoutsessions();
+            CreateCheckoutSessionResponse response = checkoutService.checkoutsessions(req);
             return gson.toJson(response);
         });
 
diff --git a/src/main/java/checkout/CheckoutService.java b/src/main/java/checkout/CheckoutService.java
index 9895bbc..b73b957 100644
--- a/src/main/java/checkout/CheckoutService.java
+++ b/src/main/java/checkout/CheckoutService.java
@@ -10,6 +10,7 @@ import com.adyen.model.checkout.CreateCheckoutSessionRequest;
 import com.adyen.model.checkout.CreateCheckoutSessionResponse;
 import com.adyen.service.Checkout;
 import com.adyen.service.exception.ApiException;
+import spark.Request;
 
 public class CheckoutService {
 
@@ -21,7 +22,7 @@ public class CheckoutService {
         checkout = new Checkout(new Client(prop.getProperty("apiKey"), Environment.TEST));
     }
 
-    public CreateCheckoutSessionResponse checkoutsessions() throws IOException, ApiException {
+    public CreateCheckoutSessionResponse checkoutsessions(Request req) throws IOException, ApiException {
         String orderRef = UUID.randomUUID().toString();
         Amount amount = new Amount()
                 .currency("EUR")
@@ -30,7 +31,7 @@ public class CheckoutService {
         checkoutSession.merchantAccount(merchantAccount);
         checkoutSession.setChannel(CreateCheckoutSessionRequest.ChannelEnum.WEB);
         checkoutSession.setReference(orderRef); // Typically generated by customer CMS
-        checkoutSession.setReturnUrl("http://localhost:8080/redirect?orderRef=" + orderRef);
+        checkoutSession.setReturnUrl(req.scheme() + "://" +  req.host() + "/redirect?orderRef=" + orderRef);
         checkoutSession.setAmount(amount);
         return checkout.sessions(checkoutSession);
     }