diff --git a/build.gradle.kts b/build.gradle.kts
index 3047bd6..56f39da 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -10,7 +10,7 @@ plugins {
 }
 
 group = "io.github.samarium150"
-version = "1.0.1"
+version = "1.1.0"
 
 repositories {
     maven("https://maven.aliyun.com/repository/public")
@@ -31,7 +31,6 @@ dependencies {
     implementation("it.justwrote:kjob-inmem:0.2.0") {
         exclude(group = "org.jetbrains.kotlin")
         exclude(group = "org.jetbrains.kotlinx")
-        exclude(group = "org.slf4j")
     }
 }
 
diff --git a/src/main/kotlin/MiraiConsoleLoafersCalendar.kt b/src/main/kotlin/MiraiConsoleLoafersCalendar.kt
index 5ad6595..4addd0c 100644
--- a/src/main/kotlin/MiraiConsoleLoafersCalendar.kt
+++ b/src/main/kotlin/MiraiConsoleLoafersCalendar.kt
@@ -39,7 +39,7 @@ object MiraiConsoleLoafersCalendar : KotlinPlugin(
     JvmPluginDescription(
         id = "io.github.samarium150.mirai.plugin.mirai-console-loafers-calender",
         name = "Loafers' Calender",
-        version = "1.0.1",
+        version = "1.1.0",
     ) {
         author("Samarium")
     }
diff --git a/src/main/kotlin/command/GetLoafersCalendar.kt b/src/main/kotlin/command/GetLoafersCalendar.kt
index 5255df3..f1c15c7 100644
--- a/src/main/kotlin/command/GetLoafersCalendar.kt
+++ b/src/main/kotlin/command/GetLoafersCalendar.kt
@@ -19,8 +19,9 @@ package io.github.samarium150.mirai.plugin.loafers_calendar.command
 import io.github.samarium150.mirai.plugin.loafers_calendar.MiraiConsoleLoafersCalendar
 import io.github.samarium150.mirai.plugin.loafers_calendar.config.CommandConfig
 import io.github.samarium150.mirai.plugin.loafers_calendar.config.PluginConfig
-import io.github.samarium150.mirai.plugin.loafers_calendar.util.cacheFolder
 import io.github.samarium150.mirai.plugin.loafers_calendar.util.downloadLoafersCalender
+import io.github.samarium150.mirai.plugin.loafers_calendar.util.logger
+import io.ktor.client.features.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import net.mamoe.mirai.console.command.CommandSender
@@ -29,8 +30,8 @@ import net.mamoe.mirai.console.command.SimpleCommand
 import net.mamoe.mirai.console.command.descriptor.ExperimentalCommandDescriptors
 import net.mamoe.mirai.console.util.ConsoleExperimentalApi
 import net.mamoe.mirai.contact.Contact.Companion.sendImage
+import java.text.ParseException
 
-@Suppress("unused")
 object GetLoafersCalendar : SimpleCommand(
     MiraiConsoleLoafersCalendar,
     primaryName = "loafers-calendar",
@@ -42,26 +43,25 @@ object GetLoafersCalendar : SimpleCommand(
     @ConsoleExperimentalApi
     override val prefixOptional = true
 
+    @Suppress("unused")
     @Handler
-    suspend fun CommandSender.handle() {
-        val inputStream = downloadLoafersCalender()
-        if (this is CommandSenderOnMessage<*>) {
-            fromEvent.subject.sendImage(inputStream)
-            withContext(Dispatchers.IO) {
-                inputStream.close()
+    suspend fun CommandSender.handle(date: String? = null) {
+        val inputStream = runCatching {
+            downloadLoafersCalender(date)
+        }.getOrElse {
+            when (it) {
+                is ParseException -> sendMessage("日期格式错误，请使用 yyyyMMdd 格式")
+                is ServerResponseException -> sendMessage("获取日历图片失败")
+                else -> logger.error(it)
             }
-        } else if (PluginConfig.save)
+            return@handle
+        }
+        if (this is CommandSenderOnMessage<*>)
+            fromEvent.subject.sendImage(inputStream)
+        else if (PluginConfig.save)
             sendMessage("图片已下载")
-    }
-
-    @Handler
-    suspend fun CommandSenderOnMessage<*>.handle(date: String) {
-        if (PluginConfig.save) {
-            if (date.matches(Regex("^\\d{4}-\\d{2}-\\d{2}$"))) {
-                val file = cacheFolder.resolve("${date}.png")
-                if (file.exists()) fromEvent.subject.sendImage(file)
-                else sendMessage("没有找${date}的日历图片")
-            } else sendMessage("日期格式错误，请使用 yyyy-MM-dd 格式")
-        } else sendMessage("仅支持获取保存过的日历图片，请先设置PluginConfig.save为true")
+        withContext(Dispatchers.IO) {
+            inputStream.close()
+        }
     }
 }
diff --git a/src/main/kotlin/util/General.kt b/src/main/kotlin/util/General.kt
index 4337acb..7485073 100644
--- a/src/main/kotlin/util/General.kt
+++ b/src/main/kotlin/util/General.kt
@@ -20,15 +20,21 @@ import io.github.samarium150.mirai.plugin.loafers_calendar.MiraiConsoleLoafersCa
 import io.github.samarium150.mirai.plugin.loafers_calendar.config.PluginConfig
 import io.github.samarium150.mirai.plugin.loafers_calendar.data.PluginData
 import io.ktor.client.call.*
+import io.ktor.client.features.*
 import io.ktor.client.request.*
 import io.ktor.client.statement.*
 import it.justwrote.kjob.KronJob
 import net.mamoe.mirai.Bot
 import net.mamoe.mirai.contact.Contact.Companion.sendImage
 import java.io.InputStream
+import java.text.ParseException
 import java.text.SimpleDateFormat
 import java.util.*
 
+internal val logger by lazy {
+    MiraiConsoleLoafersCalendar.logger
+}
+
 internal val cacheFolder by lazy {
     val folder = MiraiConsoleLoafersCalendar.dataFolder.resolve("cache")
     if (!folder.exists()) folder.mkdirs()
@@ -43,12 +49,19 @@ internal fun getUTC8Date(): Date {
     return Calendar.getInstance(TimeZone.getTimeZone("UTC+8")).time
 }
 
-internal suspend fun downloadLoafersCalender(): InputStream {
-    val file = cacheFolder.resolve(
-        "${SimpleDateFormat("yyyy-MM-dd").format(getUTC8Date())}.png"
-    )
+@Throws(ParseException::class)
+internal fun sanitizeDate(date: String?): String {
+    if (date == null) return SimpleDateFormat("yyyyMMdd").format(getUTC8Date())
+    SimpleDateFormat("yyyyMMdd").parse(date)
+    return date
+}
+
+@Throws(ParseException::class, ServerResponseException::class)
+internal suspend fun downloadLoafersCalender(date: String? = null): InputStream {
+    val target = sanitizeDate(date)
+    val file = cacheFolder.resolve("${target}.png")
     if (file.exists()) return file.inputStream()
-    val response: HttpResponse = httpClient.get("https://api.vvhan.com/api/moyu")
+    val response: HttpResponse = httpClient.get("https://api.j4u.ink/proxy/redirect/moyu/calendar/${target}.png")
     val body: ByteArray = response.receive()
     if (PluginConfig.save)
         file.writeBytes(body)