diff --git a/package.mask/all b/package.mask/all
index ea19f11..6bd21df 100644
--- a/package.mask/all
+++ b/package.mask/all
@@ -3,7 +3,6 @@
 >=dev-lang/python-3.10
 >=dev-libs/boost-1.77
 >=dev-scheme/guile-2.2
->=mail-client/thunderbird-bin-79
 >media-fonts/noto-20170403
 =media-libs/netpbm-10.76.00
 >=net-libs/nodejs-14
@@ -11,5 +10,6 @@
 >sys-fs/zfs-2
 sys-libs/libxcrypt
 >=virtual/libcrypt-2
->=www-client/firefox-bin-79
+>=www-client/firefox-bin-92
 >www-client/opera-13
+
diff --git a/package.use/all b/package.use/all
index 7f12853..6e80fbb 100644
--- a/package.use/all
+++ b/package.use/all
@@ -62,6 +62,7 @@ dev-libs/openssl tls-heartbeat
 dev-libs/popt static-libs
 dev-libs/xmlsec nss
 dev-python/PyQt4 webkit
+dev-python/matplotlib -tk
 dev-python/pillow -tk
 dev-python/pyopengl -tk
 dev-python/rdflib -mysql