diff --git a/profiles/base/package.use.mask b/profiles/base/package.use.mask
index c82334a1a876a..72155a54172fe 100644
--- a/profiles/base/package.use.mask
+++ b/profiles/base/package.use.mask
@@ -6,6 +6,11 @@
 # This file is only for generic masks. For arch-specific masks (i.e.
 # mask everywhere, unmask on arch/*) use arch/base.
 
+# Michał Górny <mgorny@gentoo.org> (2020-06-07)
+# dev-python/wxpython is broken seriusly with Python 3.7+ (it segfaults)
+# and there is really no point in attempting to port it to py3.9.
+dev-python/matplotlib wxwidgets
+
 # Georgy Yakovlev <gyakovlev@gentoo.org> (2020-05-04)
 # Broken error[E0478]: lifetime bound not satisfied
 =dev-lang/rust-1.44.0 miri
diff --git a/profiles/base/package.use.stable.mask b/profiles/base/package.use.stable.mask
index 218c8f4a10aab..ece807d304799 100644
--- a/profiles/base/package.use.stable.mask
+++ b/profiles/base/package.use.stable.mask
@@ -4,10 +4,6 @@
 # This file requires eapi 5 or later. New entries go on top.
 # Please use the same syntax as in package.use.mask
 
-# Andreas Sturmlechner <asturm@gentoo.org> (2020-06-06)
-# dev-python/wxpython:4.0 w/ py3 is not stable, bug #714566
-dev-python/matplotlib wxwidgets
-
 # Sergei Trofimovich <slyfox@gentoo.org> (2020-04-13)
 # app-text/pandoc (dev-lang/ghc) has no stable keywords.
 app-emulation/xen-tools doc