diff --git a/package_unmask.conf b/package_unmask.conf
index 420a921..3eb825f 100644
--- a/package_unmask.conf
+++ b/package_unmask.conf
@@ -20,6 +20,8 @@ net-im/pidgin-skypeweb[~scm]
 media-video/guvcview[~scm]
 net-im/pidgin-opensteamworks[~scm]
 
+sci-apps/z3[~scm]
+
 # valyriatear
 media-libs/SDL_ttf:2