diff --git a/package.mask/all b/package.mask/all
index 932704d..b92a03a 100644
--- a/package.mask/all
+++ b/package.mask/all
@@ -2,6 +2,7 @@
 >=dev-db/mongodb-3.6
 >=dev-db/postgresql-11
 >=dev-lang/php-7.3
+>=dev-lang/python-3.7
 >=dev-libs/openssl-1.1
 >=dev-scheme/guile-2.2
 >media-fonts/noto-20170403