diff --git a/core/properties.py b/core/properties.py
index 9bf108d..9841212 100644
--- a/core/properties.py
+++ b/core/properties.py
@@ -12,7 +12,12 @@ def register():
         default=default_language,
         update=update_language
     )
+    
+    bpy.types.Scene.avatar_toolkit_language_changed = bpy.props.BoolProperty(default=False)
 
 def unregister():
     if hasattr(bpy.types.Scene, "avatar_toolkit_language"):
-        del bpy.types.Scene.avatar_toolkit_language
\ No newline at end of file
+        del bpy.types.Scene.avatar_toolkit_language
+        
+    if hasattr(bpy.types.Scene, "avatar_toolkit_language_changed"):
+        del bpy.types.Scene.avatar_toolkit_language_changed
diff --git a/functions/translations.py b/functions/translations.py
index c60e886..9e2a742 100644
--- a/functions/translations.py
+++ b/functions/translations.py
@@ -87,8 +87,10 @@ def update_language(self, context):
     print(f"Updating language to: {self.avatar_toolkit_language}")  # Debug print
     save_preference("language", int(self.avatar_toolkit_language))
     load_translations()
-    # Reload the addon
-    bpy.ops.script.reload()
+    # Set a flag to indicate that a language change has occurred
+    context.scene.avatar_toolkit_language_changed = True
+    # Show popup after language change
+    bpy.ops.avatar_toolkit.translation_restart_popup('INVOKE_DEFAULT')
 
 # Initial load of translations
 print("Performing initial load of translations")  # Debug print
diff --git a/resources/translations/en_US.json b/resources/translations/en_US.json
index c9f60cc..211cb5e 100644
--- a/resources/translations/en_US.json
+++ b/resources/translations/en_US.json
@@ -31,7 +31,11 @@
       "Tools.convert_to_resonite.desc": "Converts bone names on a model to names compatable with Resonite",
       "Settings.label": "Settings",
       "Settings.language.label": "Language",
-      "Settings.language.desc": "Select the language for the addon's UI"
+      "Settings.language.desc": "Select the language for the addon's UI",
+      "Settings.translation_restart_popup.label": "Translation Update",
+      "Settings.translation_restart_popup.description": "Information about translation updates",
+      "Settings.translation_restart_popup.message1": "Some translations may not apply",
+      "Settings.translation_restart_popup.message2": "until you restart Blender."
     }
   }
   
\ No newline at end of file
diff --git a/resources/translations/ja_JP.json b/resources/translations/ja_JP.json
index 0fb43c5..01e8d3b 100644
--- a/resources/translations/ja_JP.json
+++ b/resources/translations/ja_JP.json
@@ -31,6 +31,10 @@
     "Tools.convert_to_resonite.desc": "モデルのボーン名をResoniteと互換性のある名前に変換します",
     "Settings.label": "設定",
     "Settings.language.label": "言語",
-    "Settings.language.desc": "アドオンのUI言語を選択してください"
+    "Settings.language.desc": "アドオンのUI言語を選択してください",
+    "Settings.translation_restart_popup.label": "翻訳の更新",
+    "Settings.translation_restart_popup.description": "翻訳の更新に関する情報",
+    "Settings.translation_restart_popup.message1": "一部の翻訳は適用されない場合があります",
+    "Settings.translation_restart_popup.message2": "Blenderを再起動するまで。"
   }
 }
diff --git a/ui/settings.py b/ui/settings.py
index 4287a9c..36089e9 100644
--- a/ui/settings.py
+++ b/ui/settings.py
@@ -15,3 +15,26 @@ class AvatarToolkitSettingsPanel(bpy.types.Panel):
     def draw(self, context):
         layout = self.layout
         layout.prop(context.scene, "avatar_toolkit_language", text=t("Settings.language.label"))
+
+@register_wrap
+class AVATAR_TOOLKIT_OT_translation_restart_popup(bpy.types.Operator):
+    bl_idname = "avatar_toolkit.translation_restart_popup"
+    bl_label = t("Settings.translation_restart_popup.label")
+    bl_description = t("Settings.translation_restart_popup.description")
+    bl_options = {'INTERNAL'}
+
+    def execute(self, context):
+        if context.scene.avatar_toolkit_language_changed:
+            # Reload the addon after the popup is closed
+            bpy.ops.script.reload()
+            context.scene.avatar_toolkit_language_changed = False
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        return context.window_manager.invoke_props_dialog(self, width=300)
+
+    def draw(self, context):
+        layout = self.layout
+        layout.label(text=t("Settings.translation_restart_popup.message1"))
+        layout.label(text=t("Settings.translation_restart_popup.message2"))
+