diff --git a/bedhost/_version.py b/bedhost/_version.py
index 76da4a98..8e1395bd 100644
--- a/bedhost/_version.py
+++ b/bedhost/_version.py
@@ -1 +1 @@
-__version__ = "0.12.2"
+__version__ = "0.12.3"
diff --git a/requirements/requirements-all.txt b/requirements/requirements-all.txt
index 7fe617d4..b4602c17 100644
--- a/requirements/requirements-all.txt
+++ b/requirements/requirements-all.txt
@@ -12,4 +12,5 @@ psycopg[binary,pool]
 python-multipart>=0.0.9
 APScheduler>=3.11.0
 cachetools>=4.2.4
-bedboss>=0.8.5
+bedboss>=0.8.6
+#bedboss @ git+https://github.com/databio/bedboss.git@dev#egg=bedboss
diff --git a/ui/package.json b/ui/package.json
index b32c1c53..0e3044a3 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -1,7 +1,7 @@
 {
   "name": "bedhost-ui-2",
   "private": true,
-  "version": "0.12.0",
+  "version": "0.12.2",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/ui/src/components/common/connection-banner.tsx b/ui/src/components/common/connection-banner.tsx
new file mode 100644
index 00000000..2665a84f
--- /dev/null
+++ b/ui/src/components/common/connection-banner.tsx
@@ -0,0 +1,18 @@
+import { useServiceInfo } from '../../queries/useServiceInfo';
+
+export const ConnectionBanner = () => {
+  const { data, isLoading, isError } = useServiceInfo();
+
+  // Show banner only when there's an error or no data (and not loading)
+  const showBanner = !isLoading && (isError || !data);
+
+  if (!showBanner) {
+    return null;
+  }
+
+  return (
+    <div className="alert alert-warning text-center mb-0 rounded-0 py-2" role="alert">
+      🛠️ Sorry, the BEDbase team is performing maintenance. Some features may be unavailable. 🛠️
+    </div>
+  );
+};
diff --git a/ui/src/components/layout.tsx b/ui/src/components/layout.tsx
index a91cfc96..02f29d4a 100644
--- a/ui/src/components/layout.tsx
+++ b/ui/src/components/layout.tsx
@@ -3,6 +3,7 @@ import { useServiceInfo } from '../queries/useServiceInfo';
 import { StatusCircle } from './badges/status-circles';
 import { SEO } from './seo';
 import { Nav } from './nav/nav';
+import { ConnectionBanner } from './common/connection-banner';
 
 type LayoutProps = {
   children: React.ReactNode;
@@ -78,6 +79,7 @@ export const Layout = (props: LayoutProps) => {
           <header>
             <Nav />
           </header>
+          <ConnectionBanner />
           <main className='flex-fill container-fluid' style={{ minHeight: 0 }}>
             {children}
           </main>
@@ -95,6 +97,7 @@ export const Layout = (props: LayoutProps) => {
         <header>
           <Nav />
         </header>
+        <ConnectionBanner />
         <main
           className={`${fullHeight ? fluidContainer + ' min-h-screen flex-grow-1' : fluidContainer + ' flex-grow-1'}`}
         >