diff --git a/metadata/io.trezor.app.txt b/metadata/io.trezor.app.txt
index 9dd8c2e776..70310ab4d8 100644
--- a/metadata/io.trezor.app.txt
+++ b/metadata/io.trezor.app.txt
@@ -38,6 +38,12 @@ Build:1.0.4,8
     gradle=yes
     scanignore=trezor-app/src/main/assets/firmware/trezor*.bin
 
+Maintainer Notes:
+Firmware source is available at https://github.com/trezor/trezor-mcu but
+we cannot build it since its required to be signed by upstream. Check
+once in a while.
+.
+
 Auto Update Mode:Version v%v
 Update Check Mode:Tags
 Current Version:1.0.4