diff --git a/app-shells/zsh/zsh-5.2.ebuild b/app-shells/zsh/zsh-5.2.ebuild
index d36a785723a5c..82c157bbed408 100644
--- a/app-shells/zsh/zsh-5.2.ebuild
+++ b/app-shells/zsh/zsh-5.2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -29,7 +29,7 @@ RDEPEND="
 		>=dev-libs/libpcre-3.9
 		static? ( >=dev-libs/libpcre-3.9[static-libs] )
 	)
-	gdbm? ( sys-libs/gdbm )
+	gdbm? ( sys-libs/gdbm:= )
 "
 DEPEND="sys-apps/groff
 	${RDEPEND}"
diff --git a/app-shells/zsh/zsh-5.3.1.ebuild b/app-shells/zsh/zsh-5.3.1.ebuild
index e28a4cc8e1a5a..8e411bbe03aa3 100644
--- a/app-shells/zsh/zsh-5.3.1.ebuild
+++ b/app-shells/zsh/zsh-5.3.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -29,7 +29,7 @@ RDEPEND="
 		>=dev-libs/libpcre-3.9
 		static? ( >=dev-libs/libpcre-3.9[static-libs] )
 	)
-	gdbm? ( sys-libs/gdbm )
+	gdbm? ( sys-libs/gdbm:= )
 "
 DEPEND="sys-apps/groff
 	${RDEPEND}"
diff --git a/app-shells/zsh/zsh-5.4.2-r1.ebuild b/app-shells/zsh/zsh-5.4.2-r1.ebuild
index 79789092e504c..2c7d5c2366766 100644
--- a/app-shells/zsh/zsh-5.4.2-r1.ebuild
+++ b/app-shells/zsh/zsh-5.4.2-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -29,7 +29,7 @@ RDEPEND="
 		>=dev-libs/libpcre-3.9
 		static? ( >=dev-libs/libpcre-3.9[static-libs] )
 	)
-	gdbm? ( sys-libs/gdbm )
+	gdbm? ( sys-libs/gdbm:= )
 	!<sys-apps/baselayout-2.4.1
 "
 DEPEND="sys-apps/groff
diff --git a/app-shells/zsh/zsh-9999.ebuild b/app-shells/zsh/zsh-9999.ebuild
index 2b9c7dcd500df..b6cbb849b5fe8 100644
--- a/app-shells/zsh/zsh-9999.ebuild
+++ b/app-shells/zsh/zsh-9999.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -29,7 +29,7 @@ RDEPEND="
 		>=dev-libs/libpcre-3.9
 		static? ( >=dev-libs/libpcre-3.9[static-libs] )
 	)
-	gdbm? ( sys-libs/gdbm )
+	gdbm? ( sys-libs/gdbm:= )
 	!<sys-apps/baselayout-2.4.1
 "
 DEPEND="sys-apps/groff