diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3c43bab..ef2d82a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change log
 
+### v0.12.2
+* Fix a bug that prevents using middleware via a custom Bottle.
+
 ### v0.12.1
 * Check that Chrome path is a file that exists on Windows before blindly returning it.
 
diff --git a/eel/__init__.py b/eel/__init__.py
index 0df37568..b911e77e 100644
--- a/eel/__init__.py
+++ b/eel/__init__.py
@@ -148,7 +148,7 @@ def run_lambda():
         app = _start_args['app']  # type: btl.Bottle
         for route_path, route_params in BOTTLE_ROUTES.items():
             route_func, route_kwargs = route_params
-            app.route(path=route_path, callback=route_func, **route_kwargs)
+            btl.route(path=route_path, callback=route_func, **route_kwargs)
 
         return btl.run(
             host=HOST,
diff --git a/setup.py b/setup.py
index ad5a20ee..41349b2d 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name='Eel',
-    version='0.12.1',
+    version='0.12.2',
     author='Chris Knott',
     author_email='chrisknott@hotmail.co.uk',
     url='https://github.com/samuelhwilliams/Eel',