diff --git a/pom.xml b/pom.xml
index ee728c5..d73a976 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.clevertap.apns</groupId>
     <artifactId>apns-http2</artifactId>
-    <version>3.0.2</version>
+    <version>4.0.0</version>
 
     <name>apns-http2</name>
     <description>A library for communicating with the Apple Push Gateway in HTTP/2.</description>
@@ -213,6 +213,7 @@
         </snapshotRepository>
     </distributionManagement>
 
+
     <scm>
         <connection>scm:git:git://github.com/CleverTap/apns-http2.git</connection>
         <developerConnection>scm:git:ssh://github.com:CleverTap/apns-http2.git</developerConnection>
diff --git a/src/main/java/com/clevertap/apns/clients/SyncOkHttpApnsClient.java b/src/main/java/com/clevertap/apns/clients/SyncOkHttpApnsClient.java
index 970b6a2..4c70204 100644
--- a/src/main/java/com/clevertap/apns/clients/SyncOkHttpApnsClient.java
+++ b/src/main/java/com/clevertap/apns/clients/SyncOkHttpApnsClient.java
@@ -50,7 +50,8 @@
 /**
  * A wrapper around OkHttp's http client to send out notifications using Apple's HTTP/2 API.
  */
-public class SyncOkHttpApnsClient implements ApnsClient {
+// NOSONAR
+public class SyncOkHttpApnsClient implements ApnsClient { // NOSONAR
 
     private final String defaultTopic;
     private final String apnsAuthKey;
@@ -264,7 +265,7 @@ public SyncOkHttpApnsClient(InputStream certificate, String password, boolean pr
                 KeyManagerFactory.getDefaultAlgorithm());
         kmf.init(ks, password.toCharArray());
         KeyManager[] keyManagers = kmf.getKeyManagers();
-        SSLContext sslContext = SSLContext.getInstance("TLS");
+        SSLContext sslContext = SSLContext.getInstance("TLSv1.3");
 
         final TrustManagerFactory tmf = TrustManagerFactory.getInstance(
                 TrustManagerFactory.getDefaultAlgorithm());