diff --git a/profiles/package.mask b/profiles/package.mask
index dd63244a2825f..528ca0f2e7c35 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -32,6 +32,12 @@
 
 #--- END OF EXAMPLES ---
 
+# Michał Górny <mgorny@gentoo.org> (2020-08-16)
+# Unmaintained.  Broken with py3.7.  Upstream archived the repository.
+# No reverse dependencies left.
+# Removal in 30 days.  Bug #719554.
+dev-python/sleekxmpp
+
 # Michał Górny <mgorny@gentoo.org> (2020-08-16)
 # Unmaintained.  Not ported to py3.7.  Not bumped since introduction
 # in 2015.