diff --git a/app-i18n/ibus-m17n/ibus-m17n-1.3.2.ebuild b/app-i18n/ibus-m17n/ibus-m17n-1.3.2.ebuild
index 2b578de899a83..aad4f296f0400 100644
--- a/app-i18n/ibus-m17n/ibus-m17n-1.3.2.ebuild
+++ b/app-i18n/ibus-m17n/ibus-m17n-1.3.2.ebuild
@@ -10,11 +10,14 @@ SRC_URI="https://storage.googleapis.com/google-code-archive-downloads/v2/code.go
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="amd64 x86"
-IUSE="gtk nls"
+IUSE="gtk gtk3 nls"
 
 CDEPEND="app-i18n/ibus
 	dev-libs/m17n-lib
-	gtk? ( x11-libs/gtk+:2 )
+	gtk? (
+		!gtk3? ( x11-libs/gtk+:2 )
+		gtk3? ( x11-libs/gtk+:3 )
+	)
 	nls? ( virtual/libintl )"
 RDEPEND="${CDEPEND}
 	|| (
@@ -25,9 +28,10 @@ DEPEND="${CDEPEND}
 	dev-util/intltool
 	sys-devel/gettext
 	virtual/pkgconfig"
+REQUIRED_USE="gtk3? ( gtk )"
 
 src_configure() {
 	econf \
 		$(use_enable nls) \
-		$(use_with gtk gtk 2.0)
+		$(use_with gtk gtk $(usex !gtk3 2.0 3.0))
 }
diff --git a/app-i18n/ibus-m17n/ibus-m17n-1.3.4.ebuild b/app-i18n/ibus-m17n/ibus-m17n-1.3.4.ebuild
index 6bfbff46dbf1c..e3d0ab7586ccc 100644
--- a/app-i18n/ibus-m17n/ibus-m17n-1.3.4.ebuild
+++ b/app-i18n/ibus-m17n/ibus-m17n-1.3.4.ebuild
@@ -10,11 +10,14 @@ SRC_URI="https://storage.googleapis.com/google-code-archive-downloads/v2/code.go
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE="gtk nls"
+IUSE="gtk gtk3 nls"
 
 CDEPEND="app-i18n/ibus
 	dev-libs/m17n-lib
-	gtk? ( x11-libs/gtk+:2 )
+	gtk? (
+		!gtk3? ( x11-libs/gtk+:2 )
+		gtk3? ( x11-libs/gtk+:3 )
+	)
 	nls? ( virtual/libintl )"
 RDEPEND="${CDEPEND}
 	|| (
@@ -25,9 +28,10 @@ DEPEND="${CDEPEND}
 	dev-util/intltool
 	sys-devel/gettext
 	virtual/pkgconfig"
+REQUIRED_USE="gtk3? ( gtk )"
 
 src_configure() {
 	econf \
 		$(use_enable nls) \
-		$(use_with gtk gtk 2.0)
+		$(use_with gtk gtk $(usex !gtk3 2.0 3.0))
 }
diff --git a/app-i18n/ibus-m17n/metadata.xml b/app-i18n/ibus-m17n/metadata.xml
index cd556d26d1a68..b9d88c40b2039 100644
--- a/app-i18n/ibus-m17n/metadata.xml
+++ b/app-i18n/ibus-m17n/metadata.xml
@@ -17,5 +17,8 @@
     <flag name="gtk">
       Build the preference interfaces, based on <pkg>x11-libs/gtk+</pkg>:2
     </flag>
+    <flag name="gtk3">
+      Build the preference interfaces, based on <pkg>x11-libs/gtk+</pkg>:3
+    </flag>
   </use>
 </pkgmetadata>