diff --git a/build.gradle b/build.gradle
index 2081b5e..d4a4497 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,9 +22,9 @@ group= "com.bebehp.mc.eewreciever" // http://maven.apache.org/guides/mini/guide-
 archivesBaseName = "EEWReciever"
 
 minecraft {
-    version = "1.10.2-12.18.1.2011"
+    version = "1.11.2-13.20.0.2206"
     runDir = "eclipse"
-    mappings = "snapshot_20160518"
+    mappings = "snapshot_20161220"
 }
 
 jar {
diff --git a/src/main/java/com/bebehp/mc/eewreciever/ChatUtil.java b/src/main/java/com/bebehp/mc/eewreciever/ChatUtil.java
index 774e92d..9a780bb 100644
--- a/src/main/java/com/bebehp/mc/eewreciever/ChatUtil.java
+++ b/src/main/java/com/bebehp/mc/eewreciever/ChatUtil.java
@@ -15,7 +15,7 @@
 public abstract class ChatUtil {
 	public static void sendPlayerChat(final ICommandSender target, final ITextComponent... components) {
 		for (final ITextComponent line : components) {
-			target.addChatMessage(line);
+			target.sendMessage(line);
 		}
 	}
 
@@ -23,7 +23,7 @@ public static void sendServerChat(final ITextComponent... components) {
 		final PlayerList player = FMLCommonHandler.instance().getMinecraftServerInstance().getPlayerList();
 
 		for (final ITextComponent line : components) {
-			player.sendChatMsg(line);
+			player.sendMessage(line);
 		}
 	}
 
diff --git a/src/main/java/com/bebehp/mc/eewreciever/client/ClientAuthChecker.java b/src/main/java/com/bebehp/mc/eewreciever/client/ClientAuthChecker.java
index 22d467d..cfa669e 100644
--- a/src/main/java/com/bebehp/mc/eewreciever/client/ClientAuthChecker.java
+++ b/src/main/java/com/bebehp/mc/eewreciever/client/ClientAuthChecker.java
@@ -20,11 +20,11 @@ public class ClientAuthChecker {
 	@SubscribeEvent
 	public void onTick(final ClientTickEvent event) {
 		final Minecraft mc = Minecraft.getMinecraft();
-		if (EEWRecieverMod.accessToken == null && notification && mc.isSingleplayer() && event.phase == Phase.END && mc.thePlayer != null) {
-			final EntityPlayer player = Minecraft.getMinecraft().thePlayer;
-			player.addChatComponentMessage(ChatUtil.byText("[EEWReciever]Twitter連携認証(緊急地震速報)がされていません！"));
-			player.addChatComponentMessage(ChatUtil.byText("/eew setup でセットアップを開始します"));
-			player.addChatComponentMessage(ChatUtil.byText("Twitter連携を無効にするには、configを変更し再起動して下さい"));
+		if (EEWRecieverMod.accessToken==null&&notification&&mc.isSingleplayer()&&event.phase==Phase.END&&mc.player!=null) {
+			final EntityPlayer player = Minecraft.getMinecraft().player;
+			player.sendMessage(ChatUtil.byText("[EEWReciever]Twitter連携認証(緊急地震速報)がされていません！"));
+			player.sendMessage(ChatUtil.byText("/eew setup でセットアップを開始します"));
+			player.sendMessage(ChatUtil.byText("Twitter連携を無効にするには、configを変更し再起動して下さい"));
 			notification = false;
 		}
 	}
diff --git a/src/main/java/com/bebehp/mc/eewreciever/common/EEWCommandBase.java b/src/main/java/com/bebehp/mc/eewreciever/common/EEWCommandBase.java
index 164299c..9f39979 100644
--- a/src/main/java/com/bebehp/mc/eewreciever/common/EEWCommandBase.java
+++ b/src/main/java/com/bebehp/mc/eewreciever/common/EEWCommandBase.java
@@ -42,12 +42,12 @@ public EEWCommandBase(final TweetQuakeSetup tweetQuakeSetup) {
 	}
 
 	@Override
-	public String getCommandName() {
+	public String getName() {
 		return "eewreciever";
 	}
 
 	@Override
-	public List<String> getCommandAliases() {
+	public List<String> getAliases() {
 		return Arrays.asList("eew");
 	}
 
@@ -55,7 +55,7 @@ public List<String> getCommandAliases() {
 	public abstract int getRequiredPermissionLevel();
 
 	@Override
-	public String getCommandUsage(final ICommandSender icommandsender) {
+	public String getUsage(final ICommandSender icommandsender) {
 		return "/eewreciever Tipe <Text>";
 	}
 
@@ -208,7 +208,7 @@ public void execute(final MinecraftServer server, final ICommandSender icommands
 	}
 
 	@Override
-	public List<String> getTabCompletionOptions(final MinecraftServer server, final ICommandSender sender, final String[] astring, @Nullable final BlockPos pos) {
+	public List<String> getTabCompletions(final MinecraftServer server, final ICommandSender sender, final String[] astring, @Nullable final BlockPos pos) {
 		if (astring.length<=1&&(ConfigurationHandler.debugMode||!limitInDebugMode())) {
 			return getListOfStringsMatchingLastWord(astring, "p2p", "twitter", "setup", "deletesettings", "enable", "disable");
 		} else if (astring.length==1) {
diff --git a/src/main/java/com/bebehp/mc/eewreciever/server/ServerAuthChecker.java b/src/main/java/com/bebehp/mc/eewreciever/server/ServerAuthChecker.java
index 18a27e7..5c6db1f 100644
--- a/src/main/java/com/bebehp/mc/eewreciever/server/ServerAuthChecker.java
+++ b/src/main/java/com/bebehp/mc/eewreciever/server/ServerAuthChecker.java
@@ -16,14 +16,14 @@ public class ServerAuthChecker {
 	@SideOnly(Side.SERVER)
 	@SubscribeEvent
 	public void onPlayerLogin(final PlayerEvent.PlayerLoggedInEvent event) {
-		final String name =  event.player.getGameProfile().getName();
+		final String name = event.player.getGameProfile().getName();
 		if (notification) {
 			if (isOP(name)) {
-				event.player.addChatComponentMessage(ChatUtil.byText("[EEWReciever]Twitter連携認証(緊急地震速報)がされていません！"));
-				event.player.addChatComponentMessage(ChatUtil.byText("/eew setup でセットアップを開始します"));
-				event.player.addChatComponentMessage(ChatUtil.byText("Twitter連携を無効にするには、configを変更し再起動して下さい"));
+				event.player.sendMessage(ChatUtil.byText("[EEWReciever]Twitter連携認証(緊急地震速報)がされていません！"));
+				event.player.sendMessage(ChatUtil.byText("/eew setup でセットアップを開始します"));
+				event.player.sendMessage(ChatUtil.byText("Twitter連携を無効にするには、configを変更し再起動して下さい"));
 			} else {
-				event.player.addChatComponentMessage(ChatUtil.byText("[EEWReciever]Setupされていません。OPに連絡して下さい。"));
+				event.player.sendMessage(ChatUtil.byText("[EEWReciever]Setupされていません。OPに連絡して下さい。"));
 			}
 		}
 	}
@@ -31,7 +31,7 @@ public void onPlayerLogin(final PlayerEvent.PlayerLoggedInEvent event) {
 	private boolean isOP(final String name) {
 		final String[] opPlayers = FMLCommonHandler.instance().getMinecraftServerInstance().getPlayerList().getOppedPlayerNames();
 		for (final String line : opPlayers) {
-			if (line == name)
+			if (line==name)
 				return true;
 		}
 		return false;