diff --git a/CHANGELOG.md b/CHANGELOG.md
index 249423f..ce5c899 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [3.1.4]
+- Added new method to Merchant API `authenticate` 
+
 ## [3.1.3]
 - Enhanced interface of the endpoint cardWallet/authorize to pass payment identifier created in the previous step of setting wallet session
 - Change `CreateCheckoutSessionRequest` to be `PaymentRequest` based
diff --git a/readme.md b/readme.md
index 2302a08..420ba1b 100644
--- a/readme.md
+++ b/readme.md
@@ -49,12 +49,12 @@ For integrating Java projects with the AltaPay gateway.
     <dependency>
         <groupId>com.altapay</groupId>
         <artifactId>sdk-java</artifactId>
-        <version>3.1.3</version>
+        <version>3.1.4</version>
     </dependency>
 
 ### Gradle
 
-    implementation 'com.altapay:sdk-java:3.1.3'
+    implementation 'com.altapay:sdk-java:3.1.4'
 
 ## Changelog
 
diff --git a/src/main/java/com/pensio/api/PensioMerchantAPI.java b/src/main/java/com/pensio/api/PensioMerchantAPI.java
index 2705706..0d554cf 100644
--- a/src/main/java/com/pensio/api/PensioMerchantAPI.java
+++ b/src/main/java/com/pensio/api/PensioMerchantAPI.java
@@ -7,6 +7,7 @@
 import com.pensio.api.generated.Session;
 import com.pensio.api.request.*;
 
+import com.pensio.response.AuthenticationResponse;
 import com.pensio.response.CheckoutSessionResponse;
 import jakarta.xml.bind.JAXBElement;
 import jakarta.xml.bind.JAXBException;
@@ -35,6 +36,15 @@ public boolean login() throws PensioAPIException
                 new HashMap<>());
 		return "OK".equals(response.getBody().getResult());
 	}
+
+    public AuthenticationResponse authenticate() throws PensioAPIException
+    {
+        APIResponse response = getAPIResponse("login",
+                HttpMethod.POST,
+                new HashMap<>());
+
+        return new AuthenticationResponse("OK".equals(response.getBody().getResult()), response.getVersion());
+    }
 	
 	public PaymentRequestResponse createPaymentRequest(PaymentRequest paymentRequest) throws PensioAPIException
 	{
diff --git a/src/main/java/com/pensio/api/request/CreateCheckoutSessionRequest.java b/src/main/java/com/pensio/api/request/CreateCheckoutSessionRequest.java
index 6910db7..d02d7ae 100644
--- a/src/main/java/com/pensio/api/request/CreateCheckoutSessionRequest.java
+++ b/src/main/java/com/pensio/api/request/CreateCheckoutSessionRequest.java
@@ -2,13 +2,10 @@
 
 import java.util.List;
 
-public class CreateCheckoutSessionRequest extends PaymentRequest {
+public class CreateCheckoutSessionRequest extends PaymentRequest<CreateCheckoutSessionRequest> {
 
     private List<String> terminals;
 
-    public CreateCheckoutSessionRequest() {
-    }
-
     public List<String> getTerminals() {
         return terminals;
     }
diff --git a/src/main/java/com/pensio/response/AuthenticationResponse.java b/src/main/java/com/pensio/response/AuthenticationResponse.java
new file mode 100644
index 0000000..5868d76
--- /dev/null
+++ b/src/main/java/com/pensio/response/AuthenticationResponse.java
@@ -0,0 +1,4 @@
+package com.pensio.response;
+
+public record AuthenticationResponse(boolean authenticated, String version) {
+}