diff --git a/.package-lists/guix-main-manifest.scm b/.package-lists/guix-main-manifest.scm
index 79176bf2..a9ed5f15 100644
--- a/.package-lists/guix-main-manifest.scm
+++ b/.package-lists/guix-main-manifest.scm
@@ -84,6 +84,7 @@
     "mediainfo"
     "mesa-utils"
     "mlocate"
+    "monolith"
     "mpv"
     "mtools"
     "nethogs"