diff --git a/package.mask/all b/package.mask/all
index faf7c43..15181be 100644
--- a/package.mask/all
+++ b/package.mask/all
@@ -3,6 +3,7 @@
 >=dev-db/postgresql-11
 >=dev-lang/php-7.3
 >=dev-libs/openssl-1.1
+>=dev-scheme/guile-2.2
 >media-fonts/noto-20170403
 =media-libs/netpbm-10.76.00
 >=net-libs/nodejs-10