diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/HikariSQLSourceConfig.java b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/HikariSQLSourceConfig.java
index 974ce17e..54e2f69f 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/HikariSQLSourceConfig.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/HikariSQLSourceConfig.java
@@ -9,18 +9,25 @@
 import java.util.function.Consumer;
 
 public class HikariSQLSourceConfig implements SQLSourceConfig {
-    private transient HikariDataSource dataSource;
+    private transient volatile HikariDataSource dataSource;
     private String dsClass;
     private Properties dsProps;
     private String driverClass;
     private String jdbcUrl;
     private String username;
     private String password;
+    private boolean initializeAtStart;
 
     public void init() {
         if (dataSource != null) {
             return;
         }
+        if(initializeAtStart) {
+            initializeConnection();
+        }
+    }
+
+    private void initializeConnection() {
         HikariConfig config = new HikariConfig();
         consumeIfNotNull(config::setDataSourceClassName, dsClass);
         consumeIfNotNull(config::setDataSourceProperties, dsProps);
@@ -34,6 +41,11 @@ public void init() {
 
     @Override
     public Connection getConnection() throws SQLException {
+        if(dataSource == null && !initializeAtStart) {
+            synchronized (this) {
+                initializeConnection();
+            }
+        }
         return dataSource.getConnection();
     }
 
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
index af1045ca..85dbd336 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
@@ -44,6 +44,7 @@ public SQLSourceConfig getSQLConfig() {
     @Override
     public void init(LaunchServer server, AuthProviderPair pair) {
         super.init(server, pair);
+        logger.warn("Method 'mysql' deprecated and may be removed in future release. Please use new 'sql' method: https://gravitlauncher.com/auth");
         String userInfoCols = makeUserCols();
         String hardwareInfoCols = "id, hwDiskId, baseboardSerialNumber, displayId, bitness, totalMemory, logicalProcessors, physicalProcessors, processorMaxFreq, battery, id, graphicCard, banned, publicKey";
         if (sqlFindHardwareByPublicKey == null)
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/PostgresSQLCoreProvider.java b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/PostgresSQLCoreProvider.java
index 98e36940..9b6122f8 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/PostgresSQLCoreProvider.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/PostgresSQLCoreProvider.java
@@ -1,5 +1,7 @@
 package pro.gravit.launchserver.auth.core;
 
+import pro.gravit.launchserver.LaunchServer;
+import pro.gravit.launchserver.auth.AuthProviderPair;
 import pro.gravit.launchserver.auth.PostgreSQLSourceConfig;
 import pro.gravit.launchserver.auth.SQLSourceConfig;
 
@@ -10,4 +12,10 @@ public class PostgresSQLCoreProvider extends AbstractSQLCoreProvider {
     public SQLSourceConfig getSQLConfig() {
         return postgresSQLHolder;
     }
+
+    @Override
+    public void init(LaunchServer server, AuthProviderPair pair) {
+        super.init(server, pair);
+        logger.warn("Method 'postgresql' deprecated and may be removed in future release. Please use new 'sql' method: https://gravitlauncher.com/auth");
+    }
 }