diff --git a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TelegramBotsHelper.java b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TelegramBotsHelper.java
index 22bbeb4b..01390ac5 100644
--- a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TelegramBotsHelper.java
+++ b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TelegramBotsHelper.java
@@ -185,6 +185,10 @@ public final class TelegramBotsHelper {
         return "{\"ok\": false,\"error_code\": 400,\"description\": \"Error descriptions\",\"parameters\": {\"migrate_to_chat_id\": 12345,\"retry_after\": 12}}";
     }
 
+    public static String getResponseWithError409() {
+        return "{\"ok\": false,\"error_code\": 409,\"description\": \"Conflict: terminated by other getUpdates request; make sure that only one bot instance is running\"}";
+    }
+
     public static String GetSetGameScoreBooleanResponse() {
         return "{\"ok\": true,\"result\": true}";
     }
diff --git a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestDeserialization.java b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestDeserialization.java
index 76a4a543..f6caaf1a 100644
--- a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestDeserialization.java
+++ b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestDeserialization.java
@@ -51,7 +51,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestListUpdates() throws Exception {
+    void testListUpdates() throws Exception {
         String updateText = "{\"ok\":true,\"result\":[{\"update_id\":79995144,\n" +
                 "\"message\":{\"message_id\":90,\"from\":{\"id\":1234567,\"is_bot\":false,\"first_name\":\"MyFirstName\",\"username\":\"MyUsername\",\"language_code\":\"en\"},\"chat\":{\"id\":1234567,\"first_name\":\"MyFirstName\",\"username\":\"MyUsername\",\"type\":\"private\"},\"date\":1604154223,\"text\":\"/start\",\"entities\":[{\"offset\":0,\"length\":6,\"type\":\"bot_command\"}]}},{\"update_id\":79995145,\n" +
                 "\"message\":{\"message_id\":91,\"from\":{\"id\":12345678,\"is_bot\":false,\"first_name\":\"MyFirstName\",\"username\":\"MyUsername\",\"language_code\":\"it\"},\"chat\":{\"id\":12345678,\"first_name\":\"MyFirstName\",\"username\":\"MyUsername\",\"type\":\"private\"},\"date\":1604154306,\"text\":\"/start\",\"entities\":[{\"offset\":0,\"length\":6,\"type\":\"bot_command\"}]}},{\"update_id\":79995146,\n" +
@@ -89,7 +89,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestListUpdates2() throws Exception {
+    void testListUpdates2() throws Exception {
         String updateText = "{\"ok\":true,\"result\":[{\"update_id\":259894298,\n" +
                 "\"message\":{\"message_id\":101,\"from\":{\"id\":12345678,\"is_bot\":false,\"first_name\":\"FistName\",\"last_name\":\"LastName\",\"username\":\"username\"},\"chat\":{\"id\":12345678,\"first_name\":\"FistName\",\"last_name\":\"LastName\",\"username\":\"username\",\"type\":\"private\"},\"date\":1604171814,\"text\":\"/start\",\"entities\":[{\"offset\":0,\"length\":6,\"type\":\"bot_command\"}]}},{\"update_id\":259894299,\n" +
                 "\"message\":{\"message_id\":102,\"from\":{\"id\":12345678,\"is_bot\":false,\"first_name\":\"FistName\",\"last_name\":\"LastName\",\"username\":\"username\",\"language_code\":\"en\"},\"chat\":{\"id\":12345678,\"first_name\":\"FistName\",\"last_name\":\"LastName\",\"username\":\"username\",\"type\":\"private\"},\"date\":1604188661,\"text\":\"/start\",\"entities\":[{\"offset\":0,\"length\":6,\"type\":\"bot_command\"}]}},{\"update_id\":259894300,\n" +
@@ -106,7 +106,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestListUpdates3() throws Exception {
+    void testListUpdates3() throws Exception {
         String updateText = "{\"ok\":true,\"result\":[{\"update_id\":259894302,\n" +
                 "\"message\":{\"message_id\":105,\"from\":{\"id\":12345678,\"is_bot\":false,\"first_name\":\"FirstName\",\"username\":\"Username\"},\"chat\":{\"id\":12345678,\"first_name\":\"FirstName\",\"username\":\"Username\",\"type\":\"private\"},\"date\":1604226451,\"text\":\"/start\",\"entities\":[{\"offset\":0,\"length\":6,\"type\":\"bot_command\"}]}},{\"update_id\":259894303,\n" +
                 "\"message\":{\"message_id\":106,\"from\":{\"id\":12345678,\"is_bot\":false,\"first_name\":\"FirstName\",\"username\":\"Username\",\"language_code\":\"en\"},\"chat\":{\"id\":12345678,\"first_name\":\"FirstName\",\"username\":\"Username\",\"type\":\"private\"},\"date\":1604226480,\"document\":{\"file_name\":\"aaa.txt\",\"mime_type\":\"text/plain\",\"file_id\":\"FILEID\",\"file_unique_id\":\"AgADiQEAAjTe-VQ\",\"file_size\":2}}},{\"update_id\":259894304,\n" +
@@ -165,7 +165,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestListUpdatesVoiceChat() throws Exception {
+    void testListUpdatesVoiceChat() throws Exception {
         String updateText = "{\n" +
                 "    \"ok\": true,\n" +
                 "    \"result\": [\n" +
@@ -289,7 +289,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestDeserializationCloseMethod() throws Exception {
+    void testDeserializationCloseMethod() throws Exception {
         String updateText = "{\"ok\":true,\"result\": true}";
 
         Boolean response = new Close().deserializeResponse(updateText);
@@ -298,7 +298,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestDeserializationChatMember() throws Exception {
+    void testDeserializationChatMember() throws Exception {
         String updateText = "{\n" +
                 "    \"ok\": true,\n" +
                 "    \"result\": {\n" +
@@ -344,7 +344,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestDeserializationMessageAutodeleteChanged() throws Exception {
+    void testDeserializationMessageAutodeleteChanged() throws Exception {
         String updateText = "{\n" +
                 "    \"ok\": true,\n" +
                 "    \"result\": [\n" +
@@ -387,7 +387,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestDeserializationLogoutMethod() throws Exception {
+    void testDeserializationLogoutMethod() throws Exception {
         String updateText = "{\"ok\":true,\"result\": true}";
 
         Boolean response = new LogOut().deserializeResponse(updateText);
@@ -396,7 +396,7 @@ class TestDeserialization {
     }
 
     @Test
-    void TestDeserializationGetMyCommandsMethod() throws Exception {
+    void testDeserializationGetMyCommandsMethod() throws Exception {
         String updateText = "{\n" +
                 "    \"ok\": true,\n" +
                 "    \"result\": [\n" +
diff --git a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestTelegramApi.java b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestTelegramApi.java
index 1d0d7aae..38f155ee 100644
--- a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestTelegramApi.java
+++ b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/TestTelegramApi.java
@@ -28,7 +28,7 @@ class TestTelegramApi {
     }
 
     @Test
-    void TestTelegramApiMustBeInitializableForLongPolling() {
+    void testTelegramApiMustBeInitializableForLongPolling() {
         try {
             new TelegramBotsApi(BotSession.class);
         } catch (TelegramApiException e) {
@@ -37,7 +37,7 @@ class TestTelegramApi {
     }
 
     @Test
-    void TestTelegramApiMustBeInitializableForWebhook() {
+    void testTelegramApiMustBeInitializableForWebhook() {
         try {
             new TelegramBotsApi(BotSession.class, webhook);
         } catch (TelegramApiException e) {
@@ -46,7 +46,7 @@ class TestTelegramApi {
     }
 
     @Test
-    void TestTelegramApiMustBeThrowIfNotCreatedForWebhook() {
+    void testTelegramApiMustBeThrowIfNotCreatedForWebhook() {
         try {
             TelegramBotsApi telegramBotsApi = new TelegramBotsApi(BotSession.class, null);
             telegramBotsApi.registerBot(new WebhookBot() {
diff --git a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestAnswerInlineQuery.java b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestAnswerInlineQuery.java
index 75b4f6e1..f4e4ad23 100644
--- a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestAnswerInlineQuery.java
+++ b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestAnswerInlineQuery.java
@@ -22,7 +22,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestInlineQueryIdMustBePresent() {
+    void testInlineQueryIdMustBePresent() {
         try {
             answerInlineQuery.validate();
         } catch (TelegramApiValidationException e) {
@@ -31,7 +31,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestInlineQueryIdCanNotBeEmpty() {
+    void testInlineQueryIdCanNotBeEmpty() {
         answerInlineQuery.setInlineQueryId("");
         try {
             answerInlineQuery.validate();
@@ -41,7 +41,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestResultsMustBePresent() {
+    void testResultsMustBePresent() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         try {
             answerInlineQuery.validate();
@@ -51,7 +51,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestSwitchPmTextCanNotBeEmpty() {
+    void testSwitchPmTextCanNotBeEmpty() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         answerInlineQuery.setResults(new ArrayList<>());
         answerInlineQuery.setSwitchPmText("");
@@ -64,7 +64,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestSwitchPmParameterIsMandatoryIfSwitchPmTextIsPresent() {
+    void testSwitchPmParameterIsMandatoryIfSwitchPmTextIsPresent() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         answerInlineQuery.setResults(new ArrayList<>());
         answerInlineQuery.setSwitchPmText("Test Text");
@@ -77,7 +77,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestSwitchPmParameterCanNotBeEmptyIfSwitchPmTextIsPresent() {
+    void testSwitchPmParameterCanNotBeEmptyIfSwitchPmTextIsPresent() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         answerInlineQuery.setResults(new ArrayList<>());
         answerInlineQuery.setSwitchPmText("Test Text");
@@ -91,7 +91,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestSwitchPmParameterContainsUpTo64Chars() {
+    void testSwitchPmParameterContainsUpTo64Chars() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         answerInlineQuery.setResults(new ArrayList<>());
         answerInlineQuery.setSwitchPmText("Test Text");
@@ -105,7 +105,7 @@ class TestAnswerInlineQuery {
     }
 
     @Test
-    void TestSwitchPmParameterOnlyContainsAcceptedCharacters() {
+    void testSwitchPmParameterOnlyContainsAcceptedCharacters() {
         answerInlineQuery.setInlineQueryId("RANDOMEID");
         answerInlineQuery.setResults(new ArrayList<>());
         answerInlineQuery.setSwitchPmText("Test Text");
diff --git a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestGetUpdates.java b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestGetUpdates.java
index 4d433f6e..a07d2da0 100644
--- a/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestGetUpdates.java
+++ b/telegrambots-meta/src/test/java/org/telegram/telegrambots/meta/test/apimethods/TestGetUpdates.java
@@ -11,8 +11,7 @@ import org.telegram.telegrambots.meta.test.TelegramBotsHelper;
 
 import java.util.ArrayList;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.*;
 
 /**
  * @author Ruben Bermudez
@@ -32,14 +31,14 @@ class TestGetUpdates {
     }
 
     @Test
-    void TestGetUpdatesMustBeSerializable() throws Exception {
+    void testGetUpdatesMustBeSerializable() throws Exception {
         String json = mapper.writeValueAsString(getUpdates);
         assertNotNull(json);
         assertEquals("{\"offset\":15,\"limit\":100,\"timeout\":50,\"method\":\"getupdates\"}", json);
     }
 
     @Test
-    void TestGetUpdatesMustDeserializeCorrectResponse() throws Exception {
+    void testGetUpdatesMustDeserializeCorrectResponse() throws Exception {
         ArrayList<Update> result =
                 getUpdates.deserializeResponse(TelegramBotsHelper.GetResponseWithoutError());
         assertNotNull(result);
@@ -47,7 +46,7 @@ class TestGetUpdates {
     }
 
     @Test
-    void TestGetUpdatesMustThrowAnExceptionForInCorrectResponse() {
+    void testGetUpdatesMustThrowAnExceptionForInCorrectResponse() {
         try {
             getUpdates.deserializeResponse(TelegramBotsHelper.GetResponseWithError());
         } catch (TelegramApiRequestException e) {
@@ -56,4 +55,15 @@ class TestGetUpdates {
             assertEquals("Error descriptions", e.getApiResponse());
         }
     }
+
+    @Test
+    void testGetUpdatesMustThrowAnExceptionForInCorrectResponse409() {
+        try {
+            getUpdates.deserializeResponse(TelegramBotsHelper.getResponseWithError409());
+        } catch (TelegramApiRequestException e) {
+            assertNull(e.getParameters());
+            assertEquals(Integer.valueOf(409), e.getErrorCode());
+            assertEquals("Conflict: terminated by other getUpdates request; make sure that only one bot instance is running", e.getApiResponse());
+        }
+    }
 }
diff --git a/telegrambots-meta/src/test/resources/ResponsesSetGameScore.json b/telegrambots-meta/src/test/resources/ResponsesSetGameScore.json
index 18169cdc..fc954dab 100644
--- a/telegrambots-meta/src/test/resources/ResponsesSetGameScore.json
+++ b/telegrambots-meta/src/test/resources/ResponsesSetGameScore.json
@@ -18,9 +18,4 @@
     },
     "text": "Original"
   }
-}
-
-{
-  "ok": true,
-  "result": true
 }
\ No newline at end of file