diff --git a/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.6.0.ebuild b/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.6.0.ebuild
index b3cde4fb92b43..8d8c2aa3a3c0f 100644
--- a/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.6.0.ebuild
+++ b/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.6.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI="5"
 
-USE_RUBY="ruby21 ruby22 ruby23 ruby24"
+USE_RUBY="ruby23 ruby24 ruby25"
 
 RUBY_FAKEGEM_TASK_DOC=""
 
diff --git a/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.7.0.ebuild b/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.7.0.ebuild
index a59a70f1a6bac..6644d0fc02288 100644
--- a/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.7.0.ebuild
+++ b/dev-ruby/rrdtool-bindings/rrdtool-bindings-1.7.0.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
-USE_RUBY="ruby21 ruby22 ruby23 ruby24"
+USE_RUBY="ruby23 ruby24 ruby25"
 RUBY_FAKEGEM_TASK_DOC=""
 inherit ruby-ng