diff --git a/docker/conf/uwsgi.ini b/docker/conf/uwsgi.ini
index fae0077..23a96f6 100644
--- a/docker/conf/uwsgi.ini
+++ b/docker/conf/uwsgi.ini
@@ -3,5 +3,6 @@ chdir=/project
 socket=127.0.0.1:8080
 master=true
 vacuum=true
+gevent=100
 pidfile=/tmp/uwsgi.pid
 module=project:application
diff --git a/mitama/__init__.py b/mitama/__init__.py
index d001003..fc54a9a 100755
--- a/mitama/__init__.py
+++ b/mitama/__init__.py
@@ -11,6 +11,10 @@
 
 import argparse
 import mitama.commands
+import gevent.monkey
+#import sqlalchemy_gevent
+
+gevent.monkey.patch_all()
 
 parser = argparse.ArgumentParser(description="Mitama command utilities")
 subparser = parser.add_subparsers()
diff --git a/mitama/app/app.py b/mitama/app/app.py
index 92a9b4d..4a801c5 100644
--- a/mitama/app/app.py
+++ b/mitama/app/app.py
@@ -6,7 +6,6 @@
 import magic
 import markdown
 from jinja2 import Markup, Environment, ChoiceLoader, FileSystemLoader
-from yarl import URL
 import uuid
 
 from mitama.noimage import load_noimage_app
diff --git a/mitama/project/commands.py b/mitama/project/commands.py
index c63ec1b..2bb901f 100644
--- a/mitama/project/commands.py
+++ b/mitama/project/commands.py
@@ -24,3 +24,6 @@ def auth(project, args):
     except Exception:
         print("Authentication failed")
         sys.exit(1)
+
+def uninstall(project, args):
+    project.uninstall(args.app)
diff --git a/mitama/project/project.py b/mitama/project/project.py
index 7f9df6f..554c386 100644
--- a/mitama/project/project.py
+++ b/mitama/project/project.py
@@ -91,8 +91,9 @@ def arg_parser(self):
             cmd_auth.add_argument("-u", "--user", help="user's screen name", type=str)
             cmd_auth.add_argument("-p", "--password", help="password", type=str, nargs="?", default="", const="")
             cmd_auth.set_defaults(handler=commands.auth)
-            #cmd_cleandb = subparser.add_parser("cleandb", help="Clean up unused App's database")
-            #cmd_cleandb.add_argument("prefix", help="")
+            cmd_uninstall = subparser.add_parser("uninstall", help="Uninstall app from project clearly")
+            cmd_uninstall.add_argument("app", help="app's screen name")
+            cmd_uninstall.set_defaults(handler=commands.uninstall)
         return self._arg_parser
 
     def command(self):
diff --git a/pyproject.toml b/pyproject.toml
index efcdfb1..7d2fd15 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,6 @@ Jinja2 = "^2.11.3"
 SQLAlchemy = "^1.3.23"
 PyJWT = "^2.0.1"
 bcrypt = "^3.2.0"
-yarl = "^1.6.3"
 pysaml2 = "^6.5.1"
 tzlocal = "^2.1"
 watchdog = "^2.0.1"