diff --git a/dev-lang/ruby/ruby-2.3.7.ebuild b/dev-lang/ruby/ruby-2.3.7.ebuild
index aad01a2cc30a8..a65f51e5afc9e 100644
--- a/dev-lang/ruby/ruby-2.3.7.ebuild
+++ b/dev-lang/ruby/ruby-2.3.7.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -49,7 +49,7 @@ RDEPEND="
 	ncurses? ( sys-libs/ncurses:0= )
 	readline?  ( sys-libs/readline:0= )
 	dev-libs/libyaml
-	virtual/libffi
+	virtual/libffi:=
 	sys-libs/zlib
 	>=app-eselect/eselect-ruby-20151229
 	!<dev-ruby/rdoc-3.9.4
diff --git a/dev-lang/ruby/ruby-2.4.4-r1.ebuild b/dev-lang/ruby/ruby-2.4.4-r1.ebuild
index dec2991fe7a86..f56853e06c91a 100644
--- a/dev-lang/ruby/ruby-2.4.4-r1.ebuild
+++ b/dev-lang/ruby/ruby-2.4.4-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -34,7 +34,7 @@ RDEPEND="
 		dev-lang/tk:0=[threads]
 	)
 	dev-libs/libyaml
-	virtual/libffi
+	virtual/libffi:=
 	sys-libs/zlib
 	>=app-eselect/eselect-ruby-20161226
 	!<dev-ruby/rdoc-3.9.4
diff --git a/dev-lang/ruby/ruby-2.4.4.ebuild b/dev-lang/ruby/ruby-2.4.4.ebuild
index 76b123a6e62f6..038d354bd15d2 100644
--- a/dev-lang/ruby/ruby-2.4.4.ebuild
+++ b/dev-lang/ruby/ruby-2.4.4.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -47,7 +47,7 @@ RDEPEND="
 		dev-lang/tk:0=[threads]
 	)
 	dev-libs/libyaml
-	virtual/libffi
+	virtual/libffi:=
 	sys-libs/zlib
 	>=app-eselect/eselect-ruby-20161226
 	!<dev-ruby/rdoc-3.9.4
diff --git a/dev-lang/ruby/ruby-2.5.1-r1.ebuild b/dev-lang/ruby/ruby-2.5.1-r1.ebuild
index d5c3f48de2ddc..63877c7dfd3ed 100644
--- a/dev-lang/ruby/ruby-2.5.1-r1.ebuild
+++ b/dev-lang/ruby/ruby-2.5.1-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -34,7 +34,7 @@ RDEPEND="
 		dev-lang/tk:0=[threads]
 	)
 	dev-libs/libyaml
-	virtual/libffi
+	virtual/libffi:=
 	sys-libs/zlib
 	>=app-eselect/eselect-ruby-20171225
 "
diff --git a/dev-lang/ruby/ruby-2.5.1.ebuild b/dev-lang/ruby/ruby-2.5.1.ebuild
index a6c97c1a73627..4b253b6802680 100644
--- a/dev-lang/ruby/ruby-2.5.1.ebuild
+++ b/dev-lang/ruby/ruby-2.5.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -47,7 +47,7 @@ RDEPEND="
 		dev-lang/tk:0=[threads]
 	)
 	dev-libs/libyaml
-	virtual/libffi
+	virtual/libffi:=
 	sys-libs/zlib
 	>=app-eselect/eselect-ruby-20171225
 "