diff --git a/aklive2d.py b/aklive2d.py
index befbb1e..f541cb2 100755
--- a/aklive2d.py
+++ b/aklive2d.py
@@ -66,12 +66,20 @@ class AkLive2D:
             help="Operators to build"
         )
 
+        build.add_argument(
+            "-r", 
+            "--rebuild", 
+            dest="rebuild",
+            action='store_true',
+            help="Rebuild assets"
+        )
+
         self.args = parser.parse_args()
         if self.args.command == "server" or self.args.command == "s":
             self.running = Server(self.args.port, self.args.operator_name, self.config)
         
         if self.args.command == "build" or self.args.command == "b":
-            self.running = Builder(self.config, self.args.operator_names)
+            self.running = Builder(self.config, self.args.operator_names, self.args.rebuild)
 
         self.running.start()
 
diff --git a/lib/builder.py b/lib/builder.py
index 6c24f90..99f4dc0 100644
--- a/lib/builder.py
+++ b/lib/builder.py
@@ -8,10 +8,11 @@ from lib.html_processor import HtmlProcessor
 
 class Builder:
 
-    def __init__(self, config, operator_names=list()) -> None:
+    def __init__(self, config, operator_names=list(), rebuild=False) -> None:
         self.operator_names = operator_names
         self.config = config
         self.html_processor = HtmlProcessor(config)
+        self.rebuild = rebuild
 
     def start(self):
         if "all" in self.operator_names:
@@ -38,7 +39,7 @@ class Builder:
         )
 
         operator_file = pathlib.Path.cwd().joinpath(target_path, "..", "operator_assets.js")
-        if operator_file.exists() is False:
+        if operator_file.exists() is False or self.rebuild is True:
             print("Building operaotr data for {}...".format(operator_name))
 
             alpha_composite_threads = list()