diff --git a/usr/bin/spoc-app b/usr/bin/spoc-app
index 4e1ac8f..adb5624 100644
--- a/usr/bin/spoc-app
+++ b/usr/bin/spoc-app
@@ -42,11 +42,11 @@ def install(app_name):
 
 @locked(LOCK_FILE, print_lock)
 def update(app_name):
-    App(app_name).update()
+    App(app_name, False).update()
 
 @locked(LOCK_FILE, print_lock)
 def uninstall(app_name):
-    App(app_name).uninstall()
+    App(app_name, False).uninstall()
 
 def start(app_name):
     App(app_name).start()
diff --git a/usr/lib/python3.8/spoc/app.py b/usr/lib/python3.8/spoc/app.py
index 880506c..174b359 100644
--- a/usr/lib/python3.8/spoc/app.py
+++ b/usr/lib/python3.8/spoc/app.py
@@ -87,11 +87,26 @@ class App:
         repo_local.register_app(self.name, self.get_definition())
 
     def update(self):
-        raise NotImplementedError()
+        # Load the local repo data here instead set_definition() to avoid fully defining containers which may not exist already
+        definition = repo_local.get_app(self.name)
+        # Remove containers
+        for container in definition['containers']:
+            Container(container, False).destroy()
+        # Load online definition
+        definition = repo_online.get_app(self.name)
+        self.version = definition['version']
+        self.meta = definition['meta']
+        # Build containers
+        for container,container_defintion in definition['containers'].items():
+            self.create_container(container, container_defintion)
+        # Run update script and re-register the app
+        self.run_script('update')
+        repo_local.register_app(self.name, self.get_definition())
 
     def uninstall(self):
-        definition = repo_local.get_app(self.name)
         self.run_script('uninstall')
+        # Load the local repo data here instead set_definition() to avoid fully defining containers which may not exist already
+        definition = repo_local.get_app(self.name)
         # Remove containers
         for container in definition['containers']:
             Container(container, False).destroy()