diff --git a/startos/main.ts b/startos/main.ts
index cef2350..b30fefb 100644
--- a/startos/main.ts
+++ b/startos/main.ts
@@ -17,7 +17,12 @@ export const main = sdk.setupMain(async ({ effects }) => {
       }),
       'munin-bitcoin-sub',
     ),
-    exec: { command: ['munin-bitcoin'] },
+    exec: {
+      command: ['munin-bitcoin'],
+      env: {
+        MUNIN_FULCRUM_URL: 'tcp://fulcrum.startos:50001',
+      },
+    },
     ready: {
       display: i18n('Web Interface'),
       fn: () =>