diff --git a/database/migrations/2019_12_14_095751_update_ip_field.php b/database/migrations/2019_12_14_095751_update_ip_field.php
new file mode 100644
index 00000000..d4179814
--- /dev/null
+++ b/database/migrations/2019_12_14_095751_update_ip_field.php
@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class UpdateIpField extends Migration
+{
+    public function up()
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->string('ip', 39)->change();
+        });
+    }
+
+    public function down()
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->string('ip', 32)->change();
+        });
+    }
+}
diff --git a/resources/misc/changelogs/en/5.0.0.md b/resources/misc/changelogs/en/5.0.0.md
index 0c9b5ca0..162754a6 100644
--- a/resources/misc/changelogs/en/5.0.0.md
+++ b/resources/misc/changelogs/en/5.0.0.md
@@ -23,6 +23,7 @@
 - Use `install.lock` file to detect status of installation.
 - Load front end i18n text from `lang/front-end.yml` of a plugin automatically.
 - Upgraded AdminLTE to v3.
+- Lengthened `ip` field in order to support IPv6.
 
 ## Fixed
 
diff --git a/resources/misc/changelogs/zh_CN/5.0.0.md b/resources/misc/changelogs/zh_CN/5.0.0.md
index f4c3ff74..80fa699a 100644
--- a/resources/misc/changelogs/zh_CN/5.0.0.md
+++ b/resources/misc/changelogs/zh_CN/5.0.0.md
@@ -23,6 +23,7 @@
 - 使用 `install.lock` 文件来检测安装状态
 - 插件系统：自动从 `lang/front-end.yml` 中加载前端多语言
 - AdminLTE 升级到 v3
+- 将 `ip` 字段的长度增加到 39 以支持 IPv6
 
 ## 修复